{
  "data": {
    "a": {
      "slug": "muse-spark-open",
      "name": "Muse Spark Open",
      "vendor": "Meta",
      "vendorUrl": "https://dev.meta.ai/models/muse-spark-open",
      "kind": "model",
      "category": "inference",
      "summary": "Muse Spark Open is Meta's open-weight multimodal model for coding and agentic work, with 816B total and 42B active parameters and a 1M-token context, released on 15 October 2026 under the Muse Model Licence for self-hosting.",
      "url": "https://www.anchorterminal.com/tools/muse-spark-open",
      "markdownUrl": "https://www.anchorterminal.com/tools/muse-spark-open.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/muse-spark-open.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/muse-spark-open.json",
      "repo": "https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B",
      "license": "Muse Model Licence (source-available weights, not an OSI licence), free of charge with an attribution notice, a separate agreement with Meta before Model as a Service by a licensee group above $20M gross revenue, and the Muse Spark Open Usage Policy",
      "transports": [
        "http"
      ],
      "packages": [],
      "auth": "none",
      "authNotes": "Running the model needs no account or key. Getting Meta's weights does. Both Hugging Face repositories (BF16 and NVFP4) are gated with manual review and ask for full legal name, date of birth, country, affiliation and job title, and downloads then use a Hugging Face access token. The GGUF quantisations from ggml-org and Unsloth that Meta's docs point to are not gated. A local server has whatever authentication the owner adds, such as llama.cpp's `--api-key`.",
      "pricing": "free",
      "pricingNotes": "Free to download and run under the Muse Model Licence, with the owner's GPUs as the cost. A licensee whose group has more than $20M gross revenue in any 12 months must notify Meta and sign a separate agreement before offering it as Model as a Service. Hosted copies cost $1.25 input, $0.15 cached input and $4.25 output per million tokens on Fireworks, Baseten, Modal and OpenRouter (checked 2026-10-15). Meta Model API does not serve it.",
      "priceSummary": "from $1.25 / 1M in",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402. Muse Spark Open is a model the owner runs, with no payment route from Meta, and Meta Model API does not serve it (checked 2026-10-15).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-15"
      },
      "docsUrl": "https://dev.meta.ai/docs/muse-spark-open",
      "llmsTxt": "https://dev.meta.ai/llms.txt",
      "capabilities": [
        "inference.llm",
        "inference.open-weights",
        "inference.local"
      ],
      "tags": [
        "model",
        "open-weights",
        "self-hosted",
        "local",
        "free",
        "gated",
        "multimodal",
        "openai-compatible",
        "llms-txt",
        "gpu",
        "new"
      ],
      "lastRelease": "2026-10-15",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 53.5,
        "grade": "D",
        "agentReady": false,
        "rank": 824,
        "ranked": true,
        "rankOf": 1221,
        "categoryRank": 22,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 69,
          "maintenance": 60,
          "payments": 50,
          "reliability": 42,
          "schema": 61,
          "security": 44,
          "transparency": 54
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-15"
        },
        "negative": 0,
        "verdict": "Muse Spark Open runs on the owner's hardware in seven runtimes, with OpenAI-compatible servers in vLLM and SGLang, standard tool calls, a 1M-token context and Meta's own serving docs. Serving the 537 GB NVFP4 checkpoint takes four B300 GPUs, Meta's download is gated by manual review, and the licence adds attribution and a revenue threshold for model resellers.",
        "bestFor": "A team with a four-GPU Blackwell node, or two to four Mac Studios, that wants a 1M-token multimodal coding and agent model on its own hardware with no prompts leaving it.",
        "strengths": [
          "816B total and 42B active parameters with a 1,048,576-token context, taking text, image, video and audio input",
          "Day-one support in vLLM, SGLang, TensorRT-LLM, Transformers, llama.cpp, MLX and Unsloth, with commands for each in Meta's docs",
          "With the `muse` parsers, reasoning comes back in its own field and tool calls as a standard `tool_calls` array",
          "The licence grants use, fine-tuning, distillation and resale free of charge, with no user cap and no regional exclusion",
          "llms.txt and Markdown docs cover checkpoints, prompting, stop tokens, recommended settings and post-training"
        ],
        "weaknesses": [
          "The NVFP4 checkpoint (about 537 GB) serves on four B300 GPUs and the BF16 one (about 1.65 TB) on eight",
          "Meta's Hugging Face repositories need manual approval with legal name and date of birth, which the Get the model page doesn't mention",
          "Products must display \"Built with Muse Spark Open\", and a company group with over $20M revenue needs Meta's agreement to offer it as Model as a Service",
          "The Usage Policy rules out military, nuclear, espionage, critical infrastructure and heavy machinery uses, and users under 18",
          "Released on 15 October 2026, with no changelog, deprecation policy or CI found, and the full evaluation report not yet published"
        ],
        "agentNotes": [
          "Start vLLM or SGLang with `--reasoning-parser muse --tool-call-parser muse` (vLLM also `--enable-auto-tool-choice`), or tool calls come back as raw text",
          "Set `reasoning_effort` to `low` or `medium` for short tasks. The default is `xhigh`, reasoning can't be turned off, and other values return an error",
          "Stop only on `\u003c|eot|\u003e` and end of text. Stopping on `\u003c|eom|\u003e` cuts off tool calls and final answers",
          "Stream long generations and leave `max_tokens` room for reasoning, or `content` can come back empty with `finish_reason` `length`",
          "Don't call Meta Model API for this model. Use a self-hosted server or a hosted provider's model string, such as `meta-models/muse-spark-open`"
        ],
        "metrics": {
          "kind": "local",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 53.5
          }
        ],
        "editorialScores": {
          "ergonomics": 69,
          "maintenance": 60,
          "payments": 50,
          "reliability": 42,
          "schema": 61,
          "security": 44,
          "transparency": 50
        },
        "provenanceScore": 57,
        "checked": {
          "categories": {
            "ergonomics": "2026-10-15",
            "maintenance": "2026-10-15",
            "payments": "2026-10-15",
            "reliability": "2026-10-15",
            "schema": "2026-10-15",
            "security": "2026-10-15",
            "transparency": "2026-10-15"
          },
          "last": "2026-10-15",
          "lastMoved": "2026-10-27",
          "oldest": "2026-10-15",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "hf download meta-models/Muse-Spark-Open-816B-A42B-NVFP4 --local-dir ./muse-spark-open-nvfp4\n\nexport VLLM_USE_RUST_FRONTEND=1\nvllm serve meta-models/Muse-Spark-Open-816B-A42B-NVFP4 \\\n    --tensor-parallel-size 4 \\\n    --enable-expert-parallel \\\n    --max-model-len 1048576 \\\n    --reasoning-parser muse \\\n    --tool-call-parser muse \\\n    --enable-auto-tool-choice",
        "http": "curl http://localhost:8000/v1/chat/completions \\\n  -H 'Content-Type: application/json' \\\n  -d '{\n    \"model\": \"meta-models/Muse-Spark-Open-816B-A42B-NVFP4\",\n    \"messages\": [{\"role\": \"user\", \"content\": \"Refactor this module.\"}],\n    \"reasoning_effort\": \"xhigh\"\n  }'"
      },
      "letme": {
        "capability": "https://letme.dev/inference.llm",
        "tool": "https://letme.dev/muse-spark-open"
      },
      "sameCompany": [
        "meta-model-api",
        "muse-code",
        "muse-glimmer-30b"
      ],
      "family": {
        "lab": "Meta",
        "family": "Muse",
        "url": "https://www.anchorterminal.com/open-weights/#meta",
        "others": [
          {
            "name": "Muse Glimmer 30B",
            "url": "https://huggingface.co/meta-models/Muse-Glimmer-30B",
            "params": "30B (dense, multimodal)",
            "listing": "https://www.anchorterminal.com/tools/muse-glimmer-30b"
          },
          {
            "name": "Muse Glimmer 30B assistant (DFlash drafter)",
            "url": "https://huggingface.co/meta-models/Muse-Glimmer-30B-assistant",
            "params": "2.56B (Hub safetensors count; the card states no figure)"
          }
        ],
        "olderCount": 50,
        "unrestrictedCopies": 1
      },
      "area": "models",
      "provenance": {
        "legalEntity": "Meta Platforms, Inc.",
        "domain": "meta.ai",
        "domainRegistered": "2017-12-16",
        "endpointOnVendorDomain": null,
        "terms": "https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B/blob/main/LICENSE.md",
        "privacy": "",
        "statusPage": "",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-15",
        "notes": [
          "The licence names Meta Platforms, Inc. as copyright holder, and defines Meta as Meta Platforms Ireland Limited for licensees in the European region and Meta Platforms, Inc. elsewhere. The model card names the same two as model provider.",
          "The licence is the document that governs use of the weights, so it is recorded as the terms. LICENSE.md matches the text shown on the gated access form word for word. The Usage Policy is its Exhibit A. The separate USE_POLICY.md that Meta's docs link answered 401 without access and wasn't read.",
          "No privacy policy governs the model, because the owner runs it and no input reaches Meta. The access form says its details are handled under the Meta Privacy Policy on www.facebook.com, whose robots.txt asks readers like ours not to fetch it, so it wasn't read.",
          "The domain is meta.ai, where Meta's developer docs (dev.meta.ai) and research post (research.meta.ai) sit, the same as the meta-model-api and muse-code listings. RDAP gives a registration date of 16 December 2017.",
          "No hosted endpoint from Meta, so no status page. No changelog for the model was found, and the Hugging Face commit history needs access to read.",
          "dev.meta.ai/.well-known/security.txt and research.meta.ai/.well-known/security.txt returned 404 on 15 October 2026.",
          "WebFetch read the research post. It refused the Hugging Face model card as outside its allowed set, so the card, LICENSE.md, the repository and collection metadata, the discussions, the evaluation methodology PDF, Meta's docs pages and the providers' model pages were read with curl."
        ],
        "score": 57
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/muse-spark-open.json",
      "live": {
        "slug": "muse-spark-open",
        "securityTxt": {
          "url": "https://meta.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-27T15:31:26.149873721Z"
        },
        "llmsTxt": {
          "url": "https://dev.meta.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-27T14:58:42.937833008Z"
        },
        "domain": {
          "domain": "meta.ai",
          "registered": "2017-12-16",
          "source": "https://rdap.identitydigital.services/rdap/domain/meta.ai",
          "checkedAt": "2026-10-25T13:54:47.988985159Z"
        },
        "pages": [
          {
            "url": "https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B/blob/main/LICENSE.md",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-28T04:37:05.408877215Z",
            "changedAt": "2026-10-28T04:37:05.408877215Z",
            "fingerprint": "65693026cf85"
          }
        ],
        "models": {
          "meta/muse-spark-open": {
            "openrouterId": "meta/muse-spark-open",
            "tools": true,
            "structuredOutputs": true,
            "jsonMode": true,
            "reasoning": true,
            "input": [
              "audio",
              "file",
              "image",
              "text",
              "video"
            ],
            "promptCaching": true,
            "contextTokens": 1048576,
            "maxOutput": 943718,
            "checkedAt": "2026-10-27T23:49:19.214234221Z"
          }
        },
        "updatedAt": "2026-10-28T04:37:05.408877215Z"
      }
    },
    "answer": "Muse Spark Open scores 53.5 (D) on agent readiness against Simplismart's 29.7 (F), and leads in every scored category.",
    "b": {
      "slug": "simplismart",
      "name": "Simplismart",
      "vendor": "Verute Technologies Private Limited",
      "vendorUrl": "https://simplismart.ai",
      "kind": "http-api",
      "category": "inference",
      "summary": "Simplismart is an inference platform for open models. It runs 150+ models on shared pay-per-token endpoints with an OpenAI-compatible API, and handles dedicated GPU deployments, bring-your-own-cloud clusters and fine-tuning jobs.",
      "url": "https://www.anchorterminal.com/tools/simplismart",
      "markdownUrl": "https://www.anchorterminal.com/tools/simplismart.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/simplismart.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/simplismart.json",
      "license": "Proprietary hosted service. The community Pipecat integration (pipecat-simplismart, by the simpli-smart GitHub account) is BSD-2-Clause; served models keep their own licences.",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.simplismart.live",
      "packages": [
        {
          "registry": "pypi",
          "name": "simplismart-sdk"
        }
      ],
      "auth": "api-key",
      "authNotes": "Bearer API keys made under Settings, API Keys. Each key has a unique name and an expiry chosen at creation; non-expiring keys need a request to support. Keys return 401 after midnight UTC on the expiry date and can be deleted at once. The Python SDK and CLI use a separate Playground token. Organisation roles are Admin, Member and Billing User, and workspaces scope models and deployments.",
      "pricing": "usage",
      "pricingNotes": "Shared endpoints are priced per 1M tokens, per image or per audio minute, such as Llama 3.1 8B at $0.13 and DeepSeek-V3 at $0.90 per 1M tokens. Dedicated GPUs run from $1.20 (T4) to $5.20 (H200) per GPU-hour. Prepaid credits at $1 each; new organisations may receive $5 of free credits.",
      "priceSummary": "Pay per use",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs (llms.txt index, billing, API keys and API reference pages) or on the pricing page, checked 28 October 2026. Credits are bought by card, UPI or netbanking, or billed postpaid.",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-28"
      },
      "docsUrl": "https://docs.simplismart.ai",
      "llmsTxt": "https://docs.simplismart.ai/llms.txt",
      "openapi": "https://docs.simplismart.ai/openapi-specs/playground/llama-8b.yaml",
      "capabilities": [
        "inference.llm",
        "inference.open-weights",
        "speech.stt",
        "image.generate",
        "compute.endpoints",
        "finetune.sft",
        "finetune.lora",
        "finetune.preference",
        "finetune.rl"
      ],
      "tags": [
        "hosted",
        "model",
        "open-weights",
        "usage-based",
        "openai-compatible",
        "openapi",
        "llms-txt",
        "python",
        "dedicated-endpoints",
        "byoc",
        "fine-tuning"
      ],
      "lastRelease": "2026-10-19",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 29.7,
        "grade": "F",
        "agentReady": false,
        "rank": 1146,
        "ranked": true,
        "rankOf": 1221,
        "categoryRank": 32,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 17,
          "maintenance": 42,
          "payments": 25,
          "reliability": 15,
          "schema": 51,
          "security": 35,
          "transparency": 31
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-28"
        },
        "negative": 0,
        "verdict": "Simplismart exposes open models through an OpenAI-compatible endpoint with public per-token prices and expiring, revocable keys. Its public docs give no request rate limits, status page, retry guidance, tool-calling or structured-output reference, and its terms and privacy policy cover the website, not API data.",
        "bestFor": "Teams that want open models on a pay-per-token OpenAI-compatible endpoint and a path to dedicated GPUs, their own cloud or fine-tuning with one vendor, and can work without published rate limits or data-handling terms.",
        "strengths": [
          "Public per-unit prices without a login, such as Llama 3.1 8B at $0.13 per 1M tokens and Whisper v3 Turbo at $0.0018 per audio minute",
          "API keys are named, carry an expiry date chosen at creation, return 401 after expiry and can be deleted at once",
          "Markdown docs and an llms.txt index, with OpenAPI 3.1 files for seven LLMs, Whisper and Flux",
          "Shared endpoints, dedicated GPU deployments and bring-your-own-cloud clusters sit on one account, with workspaces and organisation roles"
        ],
        "weaknesses": [
          "No request or token rate limits, 429 handling or retry guidance found in the docs; only GPU quotas, given as 1 and as 8 H100s on two pages",
          "No status page, incident history or SLA document found; the 99.99% uptime figure is a homepage claim",
          "Tool calling, structured output, prompt caching and context lengths are not documented for the shared endpoints",
          "The terms (13 January 2023) and privacy policy cover the website and say nothing about prompt retention or training on API data",
          "The pricing page lists older models (Llama 3.1, DeepSeek-R1) and omits Gemma 4 31B, the model the quickstart uses"
        ],
        "agentNotes": [
          "Point an OpenAI-compatible client at https://api.simplismart.live with SIMPLISMART_API_KEY as a Bearer token, and take model ids from the marketplace or the per-model API pages.",
          "Set a key expiry and rotate before midnight UTC on the expiry date, because an expired key returns 401.",
          "Cap retries yourself with exponential backoff, because no rate limits, 429 format or retry guidance are published.",
          "Check that a model supports tools or JSON output with a test call before relying on it, because neither is documented.",
          "Confirm the per-token price of the exact model in the console before running large jobs, because the public price list is incomplete."
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "F",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 29.7
          }
        ],
        "editorialScores": {
          "ergonomics": 17,
          "maintenance": 42,
          "payments": 25,
          "reliability": 15,
          "schema": 51,
          "security": 35,
          "transparency": 14
        },
        "provenanceScore": 48,
        "checked": {
          "categories": {
            "ergonomics": "2026-10-28",
            "maintenance": "2026-10-28",
            "payments": "2026-10-28",
            "reliability": "2026-10-28",
            "schema": "2026-10-28",
            "security": "2026-10-28",
            "transparency": "2026-10-28"
          },
          "last": "2026-10-28",
          "oldest": "2026-10-28",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "http": "curl 'https://api.simplismart.live/chat/completions' -H 'Content-Type: application/json' -H \"Authorization: Bearer $SIMPLISMART_API_KEY\" -d '{\"model\": \"meta-llama/Meta-Llama-3.1-8B-Instruct\", \"messages\": [{\"role\": \"user\", \"content\": \"Say hello.\"}]}'"
      },
      "letme": {
        "capability": "https://letme.dev/inference.llm",
        "tool": "https://letme.dev/simplismart"
      },
      "area": "models",
      "unitPrices": [
        {
          "item": "Llama 3.1 8B (shared)",
          "unit": "1m-tokens",
          "usd": 0.13,
          "note": "Single per-1M-token rate on the pricing page, checked 28 October 2026; input and output are not priced separately"
        },
        {
          "item": "Llama 3.3 70B (shared)",
          "unit": "1m-tokens",
          "usd": 0.74,
          "note": "Pricing page, checked 28 October 2026"
        },
        {
          "item": "DeepSeek-V3 (shared)",
          "unit": "1m-tokens",
          "usd": 0.9,
          "note": "Pricing page, checked 28 October 2026"
        },
        {
          "item": "Whisper v3 Turbo (shared)",
          "unit": "audio-minute",
          "usd": 0.0018,
          "note": "Pricing page, checked 28 October 2026"
        },
        {
          "item": "Flux Dev (shared, 1024x1024)",
          "unit": "image",
          "usd": 0.03,
          "note": "Pricing page, checked 28 October 2026"
        },
        {
          "item": "NVIDIA H100, dedicated",
          "unit": "gpu-hour",
          "usd": 5,
          "note": "Pricing page table order, checked 28 October 2026; a Simplismart article gives $4.00 per hour"
        }
      ],
      "provenance": {
        "legalEntity": "Verute Technologies Private Limited",
        "domain": "simplismart.ai",
        "domainRegistered": "",
        "endpointOnVendorDomain": false,
        "terms": "https://simplismart.ai/terms-of-service",
        "privacy": "https://simplismart.ai/privacy-policy",
        "statusPage": "",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-28",
        "notes": [
          "The terms (last updated 13 January 2023) and privacy policy (effective 13 January 2023) name Verute Technologies Private Limited, Indian law and an address on Residency Road, Bengaluru. Both define the Service as the simplismart.ai website.",
          "The inference API answers on api.simplismart.live, a separate domain named in the docs. Domain registration was not checked.",
          "No status page found. The docs and site link none, and status.simplismart.ai could not be reached from our network.",
          "No changelog found in the docs sitemap or llms.txt. Model additions appear as blog posts.",
          "simplismart.ai/.well-known/security.txt answered 404."
        ],
        "score": 48
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/simplismart.json",
      "live": {
        "slug": "simplismart",
        "probe": {
          "target": "https://api.simplismart.live",
          "method": "get",
          "lastAt": "2026-10-28T05:41:06.267913122Z",
          "lastOk": true,
          "lastStatus": 405,
          "lastMs": 53,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 55,
          "p95ms24h": 125,
          "samples24h": 18,
          "samples30d": 18,
          "days": [
            {
              "date": "2026-10-28",
              "probes": 18,
              "ok": 18
            }
          ]
        },
        "pages": [
          {
            "url": "https://simplismart.ai/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-28T04:43:26.224508402Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "bd2d6d5ffe37"
          },
          {
            "url": "https://simplismart.ai/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-28T04:43:28.253583075Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "94fe8807daf7"
          }
        ],
        "updatedAt": "2026-10-28T05:41:06.267913122Z"
      }
    },
    "facts": [
      {
        "a": "Model API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Meta",
        "b": "Verute Technologies Private Limited",
        "name": "Vendor"
      },
      {
        "a": "no (local only)",
        "b": "https://api.simplismart.live",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "None",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Free",
        "b": "Pay per use",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Muse Model Licence (source-available weights, not an OSI licence), free of charge with an attribution notice, a separate agreement with Meta before Model as a Service by a licensee group above $20M gross revenue, and the Muse Spark Open Usage Policy",
        "b": "Proprietary hosted service. The community Pipecat integration (pipecat-simplismart, by the simpli-smart GitHub account) is BSD-2-Clause; served models keep their own licences.",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-15",
        "b": "2026-10-19",
        "name": "Last release"
      },
      {
        "a": "",
        "b": "",
        "name": "Terms last updated"
      },
      {
        "a": "no document linked",
        "b": "",
        "name": "Privacy policy last updated"
      },
      {
        "a": "",
        "b": "",
        "name": "Customer content may train models"
      },
      {
        "a": "",
        "b": "",
        "name": "Terms restrict automated access"
      },
      {
        "a": "",
        "b": "",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "",
        "b": "",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "",
        "b": "",
        "name": "Arbitration or class-action waiver"
      }
    ],
    "faq": [
      {
        "answer": "Muse Spark Open scores 53.5 (D) on agent readiness against Simplismart's 29.7 (F), and leads in every scored category.",
        "question": "Which is better for AI agents, Muse Spark Open or Simplismart?"
      },
      {
        "answer": "Muse Spark Open needs no key. Simplismart needs an API key.",
        "question": "Do Muse Spark Open and Simplismart need an API key?"
      },
      {
        "answer": "No hosted endpoint is listed for Muse Spark Open. Simplismart has a hosted endpoint at https://api.simplismart.live.",
        "question": "Can an agent call Muse Spark Open and Simplismart without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 42 against 15",
          "Schema \u0026 documentation, 61 against 51",
          "Agent ergonomics, 69 against 17",
          "Security \u0026 auth, 44 against 35",
          "Payments \u0026 pricing, 50 against 25",
          "Maintenance \u0026 community, 60 against 42",
          "Transparency \u0026 trust, 54 against 31"
        ],
        "also": [
          "No key needed to call it"
        ],
        "goodFor": "A team with a four-GPU Blackwell node, or two to four Mac Studios, that wants a 1M-token multimodal coding and agent model on its own hardware with no prompts leaving it.",
        "slug": "muse-spark-open",
        "watchFor": "The NVFP4 checkpoint (about 537 GB) serves on four B300 GPUs and the BF16 one (about 1.65 TB) on eight"
      },
      {
        "aheadOn": null,
        "also": [
          "A hosted endpoint, with nothing to install"
        ],
        "goodFor": "Teams that want open models on a pay-per-token OpenAI-compatible endpoint and a path to dedicated GPUs, their own cloud or fine-tuning with one vendor, and can work without published rate limits or data-handling terms.",
        "slug": "simplismart",
        "watchFor": "No request or token rate limits, 429 handling or retry guidance found in the docs; only GPU quotas, given as 1 and as 8 H100s on two pages"
      }
    ],
    "job": {
      "capability": "inference.llm",
      "name": "LLM inference"
    },
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      {
        "json": "https://www.anchorterminal.com/compare/anthropic-api-vs-muse-spark-open.json",
        "title": "Claude API vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/anthropic-api-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/anthropic-api-vs-simplismart.json",
        "title": "Claude API vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/anthropic-api-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/antseed-vs-muse-spark-open.json",
        "title": "Antseed vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/antseed-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/antseed-vs-simplismart.json",
        "title": "Antseed vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/antseed-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/blockrun-ai-vs-muse-spark-open.json",
        "title": "BlockRun.AI vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/blockrun-ai-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/blockrun-ai-vs-simplismart.json",
        "title": "BlockRun.AI vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/blockrun-ai-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cerebras-inference-vs-muse-spark-open.json",
        "title": "Cerebras Inference vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/cerebras-inference-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cerebras-inference-vs-simplismart.json",
        "title": "Cerebras Inference vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/cerebras-inference-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-muse-spark-open.json",
        "title": "Cloudflare AI Gateway vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-simplismart.json",
        "title": "Cloudflare AI Gateway vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cloudflare-workers-ai-vs-muse-spark-open.json",
        "title": "Cloudflare Workers AI vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/cloudflare-workers-ai-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cloudflare-workers-ai-vs-simplismart.json",
        "title": "Cloudflare Workers AI vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/cloudflare-workers-ai-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cohere-chat-vs-muse-spark-open.json",
        "title": "Cohere Chat API (Command models) vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/cohere-chat-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cohere-chat-vs-simplismart.json",
        "title": "Cohere Chat API (Command models) vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/cohere-chat-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepinfra-vs-muse-spark-open.json",
        "title": "DeepInfra vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/deepinfra-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepinfra-vs-simplismart.json",
        "title": "DeepInfra vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/deepinfra-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepseek-api-vs-muse-spark-open.json",
        "title": "DeepSeek API vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/deepseek-api-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepseek-api-vs-simplismart.json",
        "title": "DeepSeek API vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/deepseek-api-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elorian-glimpse-vs-muse-spark-open.json",
        "title": "Glimpse vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/elorian-glimpse-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elorian-glimpse-vs-simplismart.json",
        "title": "Glimpse vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/elorian-glimpse-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fireworks-inference-vs-muse-spark-open.json",
        "title": "Fireworks AI Inference vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/fireworks-inference-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fireworks-inference-vs-simplismart.json",
        "title": "Fireworks AI Inference vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/fireworks-inference-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/gemini-api-vs-muse-spark-open.json",
        "title": "Gemini Developer API vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/gemini-api-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/gemini-api-vs-simplismart.json",
        "title": "Gemini Developer API vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/gemini-api-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/groq-vs-muse-spark-open.json",
        "title": "GroqCloud vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/groq-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/groq-vs-simplismart.json",
        "title": "GroqCloud vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/groq-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/jais-3-vs-muse-spark-open.json",
        "title": "Jais 3 vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/jais-3-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/jais-3-vs-simplismart.json",
        "title": "Jais 3 vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/jais-3-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/meta-model-api-vs-muse-spark-open.json",
        "title": "Meta Model API vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/meta-model-api-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/meta-model-api-vs-simplismart.json",
        "title": "Meta Model API vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/meta-model-api-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/minimax-api-vs-muse-spark-open.json",
        "title": "MiniMax API vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/minimax-api-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/minimax-api-vs-simplismart.json",
        "title": "MiniMax API vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/minimax-api-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mistral-api-vs-muse-spark-open.json",
        "title": "Mistral AI API vs Muse Spark Open",
        "url": "https://www.anchorterminal.com/compare/mistral-api-vs-muse-spark-open"
      },
      {
        "json": "https://www.anchorterminal.com/compare/mistral-api-vs-simplismart.json",
        "title": "Mistral AI API vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/mistral-api-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-nemotron-3-5-super-vl.json",
        "title": "Muse Spark Open vs Nemotron 3.5 Super VL",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-nemotron-3-5-super-vl"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-novita-ai.json",
        "title": "Muse Spark Open vs Novita AI",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-novita-ai"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-openai-api.json",
        "title": "Muse Spark Open vs OpenAI API",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-openai-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-openrouter.json",
        "title": "Muse Spark Open vs OpenRouter",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-openrouter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-prism-inference.json",
        "title": "Muse Spark Open vs Prism Inference",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-prism-inference"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-ramp-router.json",
        "title": "Muse Spark Open vs Router.com (Ramp Router)",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-ramp-router"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-reflection-beam.json",
        "title": "Muse Spark Open vs Beam 1.0",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-reflection-beam"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-routerplus.json",
        "title": "Muse Spark Open vs RouterPlus",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-routerplus"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-sambanova.json",
        "title": "Muse Spark Open vs SambaCloud",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-sambanova"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-siliconflow.json",
        "title": "Muse Spark Open vs SiliconFlow",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-siliconflow"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-stepfun-api.json",
        "title": "Muse Spark Open vs StepFun API",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-stepfun-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-together-inference.json",
        "title": "Muse Spark Open vs Together AI Inference",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-together-inference"
      },
      {
        "json": "https://www.anchorterminal.com/compare/muse-spark-open-vs-vercel-ai-gateway.json",
        "title": "Muse Spark Open vs Vercel AI Gateway",
        "url": "https://www.anchorterminal.com/compare/muse-spark-open-vs-vercel-ai-gateway"
      },
      {
        "json": "https://www.anchorterminal.com/compare/novita-ai-vs-simplismart.json",
        "title": "Novita AI vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/novita-ai-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/openai-api-vs-simplismart.json",
        "title": "OpenAI API vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/openai-api-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/openrouter-vs-simplismart.json",
        "title": "OpenRouter vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/openrouter-vs-simplismart"
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      {
        "json": "https://www.anchorterminal.com/compare/prism-inference-vs-simplismart.json",
        "title": "Prism Inference vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/prism-inference-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/ramp-router-vs-simplismart.json",
        "title": "Router.com (Ramp Router) vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/ramp-router-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/reflection-beam-vs-simplismart.json",
        "title": "Beam 1.0 vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/reflection-beam-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/routerplus-vs-simplismart.json",
        "title": "RouterPlus vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/routerplus-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/sambanova-vs-simplismart.json",
        "title": "SambaCloud vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/sambanova-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/siliconflow-vs-simplismart.json",
        "title": "SiliconFlow vs Simplismart",
        "url": "https://www.anchorterminal.com/compare/siliconflow-vs-simplismart"
      },
      {
        "json": "https://www.anchorterminal.com/compare/simplismart-vs-stepfun-api.json",
        "title": "Simplismart vs StepFun API",
        "url": "https://www.anchorterminal.com/compare/simplismart-vs-stepfun-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/simplismart-vs-together-inference.json",
        "title": "Simplismart vs Together AI Inference",
        "url": "https://www.anchorterminal.com/compare/simplismart-vs-together-inference"
      },
      {
        "json": "https://www.anchorterminal.com/compare/simplismart-vs-vercel-ai-gateway.json",
        "title": "Simplismart vs Vercel AI Gateway",
        "url": "https://www.anchorterminal.com/compare/simplismart-vs-vercel-ai-gateway"
      },
      {
        "json": "https://www.anchorterminal.com/compare/nemotron-3-5-super-vl-vs-simplismart.json",
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        "url": "https://www.anchorterminal.com/compare/nemotron-3-5-super-vl-vs-simplismart"
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    ],
    "scores": [
      {
        "by": 27,
        "edge": "muse-spark-open",
        "key": "reliability",
        "muse-spark-open": 42,
        "name": "Reliability",
        "simplismart": 15,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 10,
        "edge": "muse-spark-open",
        "key": "schema",
        "muse-spark-open": 61,
        "name": "Schema \u0026 documentation",
        "simplismart": 51,
        "weight": 13
      },
      {
        "by": 52,
        "edge": "muse-spark-open",
        "key": "ergonomics",
        "muse-spark-open": 69,
        "name": "Agent ergonomics",
        "simplismart": 17,
        "weight": 13
      },
      {
        "by": 9,
        "edge": "muse-spark-open",
        "key": "security",
        "muse-spark-open": 44,
        "name": "Security \u0026 auth",
        "simplismart": 35,
        "weight": 14
      },
      {
        "by": 25,
        "edge": "muse-spark-open",
        "key": "payments",
        "muse-spark-open": 50,
        "name": "Payments \u0026 pricing",
        "simplismart": 25,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 18,
        "edge": "muse-spark-open",
        "key": "maintenance",
        "muse-spark-open": 60,
        "name": "Maintenance \u0026 community",
        "simplismart": 42,
        "weight": 7
      },
      {
        "by": 23,
        "edge": "muse-spark-open",
        "key": "transparency",
        "muse-spark-open": 54,
        "name": "Transparency \u0026 trust",
        "simplismart": 31,
        "weight": 7
      }
    ],
    "summary": "Muse Spark Open scores 53.5 (D) on agent readiness against Simplismart's 29.7 (F), and leads in every scored category. Both do llm inference.",
    "tutorials": [],
    "verdicts": {
      "muse-spark-open": "Muse Spark Open runs on the owner's hardware in seven runtimes, with OpenAI-compatible servers in vLLM and SGLang, standard tool calls, a 1M-token context and Meta's own serving docs. Serving the 537 GB NVFP4 checkpoint takes four B300 GPUs, Meta's download is gated by manual review, and the licence adds attribution and a revenue threshold for model resellers.",
      "simplismart": "Simplismart exposes open models through an OpenAI-compatible endpoint with public per-token prices and expiring, revocable keys. Its public docs give no request rate limits, status page, retry guidance, tool-calling or structured-output reference, and its terms and privacy policy cover the website, not API data."
    }
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  "markdown": "Muse Spark Open scores 53.5 (D) on agent readiness against Simplismart's 29.7 (F), and leads in every scored category. Both do llm inference.\n\n- Muse Spark Open: grade D, 53.5/100, rank #824 of 1221. Markdown https://www.anchorterminal.com/tools/muse-spark-open.md · JSON https://www.anchorterminal.com/api/v1/tools/muse-spark-open.json\n- Simplismart: grade F, 29.7/100, rank #1146 of 1221. Markdown https://www.anchorterminal.com/tools/simplismart.md · JSON https://www.anchorterminal.com/api/v1/tools/simplismart.json\n- Best model APIs and inference for AI agents: https://www.anchorterminal.com/best/inference/index.md\n- All 497 models comparisons: https://www.anchorterminal.com/compare/inference/index.md\n\n## Which one, for what\n\n### Muse Spark Open (D)\n\nGood for: A team with a four-GPU Blackwell node, or two to four Mac Studios, that wants a 1M-token multimodal coding and agent model on its own hardware with no prompts leaving it.\n\nAhead on:\n- Reliability, 42 against 15\n- Schema \u0026 documentation, 61 against 51\n- Agent ergonomics, 69 against 17\n- Security \u0026 auth, 44 against 35\n- Payments \u0026 pricing, 50 against 25\n- Maintenance \u0026 community, 60 against 42\n- Transparency \u0026 trust, 54 against 31\n\nAlso in its favour:\n- No key needed to call it\n\nWatch for: The NVFP4 checkpoint (about 537 GB) serves on four B300 GPUs and the BF16 one (about 1.65 TB) on eight\n\n### Simplismart (F)\n\nGood for: Teams that want open models on a pay-per-token OpenAI-compatible endpoint and a path to dedicated GPUs, their own cloud or fine-tuning with one vendor, and can work without published rate limits or data-handling terms.\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: No request or token rate limits, 429 handling or retry guidance found in the docs; only GPU quotas, given as 1 and as 8 H100s on two pages\n\n\n## Score by category\n\n| Category | Weight | Muse Spark Open | Simplismart | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 42 | 15 | Muse Spark Open +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 61 | 51 | Muse Spark Open +10 |\n| Agent ergonomics | 13% (16.2 this run) | 69 | 17 | Muse Spark Open +52 |\n| Security \u0026 auth | 14% (17.5 this run) | 44 | 35 | Muse Spark Open +9 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 50 | 25 | Muse Spark Open +25 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 60 | 42 | Muse Spark Open +18 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 54 | 31 | Muse Spark Open +23 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **53.5 · D** | **29.7 · F** | |\n\n## Facts side by side\n\n| Fact | Muse Spark Open | Simplismart |\n| --- | --- | --- |\n| Kind | Model API | HTTP API |\n| Vendor | Meta | Verute Technologies Private Limited |\n| Hosted endpoint | no (local only) | `https://api.simplismart.live` |\n| Transports | HTTP | HTTP |\n| Auth | None | API key |\n| Pricing | Free | Pay per use |\n| x402 | no | no |\n| Licence | Muse Model Licence (source-available weights, not an OSI licence), free of charge with an attribution notice, a separate agreement with Meta before Model as a Service by a licensee group above $20M gross revenue, and the Muse Spark Open Usage Policy | Proprietary hosted service. The community Pipecat integration (pipecat-simplismart, by the simpli-smart GitHub account) is BSD-2-Clause; served models keep their own licences. |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-15 | 2026-10-19 |\n| Terms last updated |  |  |\n| Privacy policy last updated | no document linked |  |\n| Customer content may train models |  |  |\n| Terms restrict automated access |  |  |\n| Terms restrict benchmarking |  |  |\n| Terms or service can change without notice |  |  |\n| Arbitration or class-action waiver |  |  |\n\n## Verdicts\n\n**Muse Spark Open.** Muse Spark Open runs on the owner's hardware in seven runtimes, with OpenAI-compatible servers in vLLM and SGLang, standard tool calls, a 1M-token context and Meta's own serving docs. Serving the 537 GB NVFP4 checkpoint takes four B300 GPUs, Meta's download is gated by manual review, and the licence adds attribution and a revenue threshold for model resellers.\n\n**Simplismart.** Simplismart exposes open models through an OpenAI-compatible endpoint with public per-token prices and expiring, revocable keys. Its public docs give no request rate limits, status page, retry guidance, tool-calling or structured-output reference, and its terms and privacy policy cover the website, not API data.\n\n## Before you call either\n\n### Muse Spark Open\n\n1. Start vLLM or SGLang with `--reasoning-parser muse --tool-call-parser muse` (vLLM also `--enable-auto-tool-choice`), or tool calls come back as raw text\n2. Set `reasoning_effort` to `low` or `medium` for short tasks. The default is `xhigh`, reasoning can't be turned off, and other values return an error\n3. Stop only on `\u003c|eot|\u003e` and end of text. Stopping on `\u003c|eom|\u003e` cuts off tool calls and final answers\n4. Stream long generations and leave `max_tokens` room for reasoning, or `content` can come back empty with `finish_reason` `length`\n5. Don't call Meta Model API for this model. Use a self-hosted server or a hosted provider's model string, such as `meta-models/muse-spark-open`\n\n### Simplismart\n\n1. Point an OpenAI-compatible client at https://api.simplismart.live with SIMPLISMART_API_KEY as a Bearer token, and take model ids from the marketplace or the per-model API pages.\n2. Set a key expiry and rotate before midnight UTC on the expiry date, because an expired key returns 401.\n3. Cap retries yourself with exponential backoff, because no rate limits, 429 format or retry guidance are published.\n4. Check that a model supports tools or JSON output with a test call before relying on it, because neither is documented.\n5. Confirm the per-token price of the exact model in the console before running large jobs, because the public price list is incomplete.\n\n## Questions\n\n### Which is better for AI agents, Muse Spark Open or Simplismart?\n\nMuse Spark Open scores 53.5 (D) on agent readiness against Simplismart's 29.7 (F), and leads in every scored category.\n\n### Do Muse Spark Open and Simplismart need an API key?\n\nMuse Spark Open needs no key. Simplismart needs an API key.\n\n### Can an agent call Muse Spark Open and Simplismart without installing anything?\n\nNo hosted endpoint is listed for Muse Spark Open. Simplismart has a hosted endpoint at https://api.simplismart.live.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/muse-spark-open-vs-simplismart.json, and with the fewest tokens: https://www.anchorterminal.com/compare/muse-spark-open-vs-simplismart.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"muse-spark-open\", \"b\": \"simplismart\"}`. From a terminal: `anchor compare muse-spark-open simplismart`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/muse-spark-open.json and https://www.anchorterminal.com/api/v1/tools/simplismart.json\n\n## Other comparisons with Muse Spark Open or Simplismart\n\n- [Claude API vs Muse Spark Open](https://www.anchorterminal.com/compare/anthropic-api-vs-muse-spark-open.md)\n- [Claude API vs Simplismart](https://www.anchorterminal.com/compare/anthropic-api-vs-simplismart.md)\n- [Antseed vs Muse Spark Open](https://www.anchorterminal.com/compare/antseed-vs-muse-spark-open.md)\n- [Antseed vs Simplismart](https://www.anchorterminal.com/compare/antseed-vs-simplismart.md)\n- [BlockRun.AI vs Muse Spark Open](https://www.anchorterminal.com/compare/blockrun-ai-vs-muse-spark-open.md)\n- [BlockRun.AI vs Simplismart](https://www.anchorterminal.com/compare/blockrun-ai-vs-simplismart.md)\n- [Cerebras Inference vs Muse Spark Open](https://www.anchorterminal.com/compare/cerebras-inference-vs-muse-spark-open.md)\n- [Cerebras Inference vs Simplismart](https://www.anchorterminal.com/compare/cerebras-inference-vs-simplismart.md)\n- [Cloudflare AI Gateway vs Muse Spark Open](https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-muse-spark-open.md)\n- [Cloudflare AI Gateway vs Simplismart](https://www.anchorterminal.com/compare/cloudflare-ai-gateway-vs-simplismart.md)\n- [Cloudflare Workers AI vs Muse Spark Open](https://www.anchorterminal.com/compare/cloudflare-workers-ai-vs-muse-spark-open.md)\n- [Cloudflare Workers AI vs Simplismart](https://www.anchorterminal.com/compare/cloudflare-workers-ai-vs-simplismart.md)\n- [Cohere Chat API (Command models) vs Muse Spark Open](https://www.anchorterminal.com/compare/cohere-chat-vs-muse-spark-open.md)\n- [Cohere Chat API (Command models) vs Simplismart](https://www.anchorterminal.com/compare/cohere-chat-vs-simplismart.md)\n- [DeepInfra vs Muse Spark Open](https://www.anchorterminal.com/compare/deepinfra-vs-muse-spark-open.md)\n- [DeepInfra vs Simplismart](https://www.anchorterminal.com/compare/deepinfra-vs-simplismart.md)\n- [DeepSeek API vs Muse Spark Open](https://www.anchorterminal.com/compare/deepseek-api-vs-muse-spark-open.md)\n- [DeepSeek API vs Simplismart](https://www.anchorterminal.com/compare/deepseek-api-vs-simplismart.md)\n- [Glimpse vs Muse Spark Open](https://www.anchorterminal.com/compare/elorian-glimpse-vs-muse-spark-open.md)\n- [Glimpse vs Simplismart](https://www.anchorterminal.com/compare/elorian-glimpse-vs-simplismart.md)\n- [Fireworks AI Inference vs Muse Spark Open](https://www.anchorterminal.com/compare/fireworks-inference-vs-muse-spark-open.md)\n- [Fireworks AI Inference vs Simplismart](https://www.anchorterminal.com/compare/fireworks-inference-vs-simplismart.md)\n- [Gemini Developer API vs Muse Spark Open](https://www.anchorterminal.com/compare/gemini-api-vs-muse-spark-open.md)\n- [Gemini Developer API vs Simplismart](https://www.anchorterminal.com/compare/gemini-api-vs-simplismart.md)\n- [GroqCloud vs Muse Spark Open](https://www.anchorterminal.com/compare/groq-vs-muse-spark-open.md)\n- [GroqCloud vs Simplismart](https://www.anchorterminal.com/compare/groq-vs-simplismart.md)\n- [Jais 3 vs Muse Spark Open](https://www.anchorterminal.com/compare/jais-3-vs-muse-spark-open.md)\n- [Jais 3 vs Simplismart](https://www.anchorterminal.com/compare/jais-3-vs-simplismart.md)\n- [Meta Model API vs Muse Spark Open](https://www.anchorterminal.com/compare/meta-model-api-vs-muse-spark-open.md)\n- [Meta Model API vs Simplismart](https://www.anchorterminal.com/compare/meta-model-api-vs-simplismart.md)\n- [MiniMax API vs Muse Spark Open](https://www.anchorterminal.com/compare/minimax-api-vs-muse-spark-open.md)\n- [MiniMax API vs Simplismart](https://www.anchorterminal.com/compare/minimax-api-vs-simplismart.md)\n- [Mistral AI API vs Muse Spark Open](https://www.anchorterminal.com/compare/mistral-api-vs-muse-spark-open.md)\n- [Mistral AI API vs Simplismart](https://www.anchorterminal.com/compare/mistral-api-vs-simplismart.md)\n- [Muse Spark Open vs Nemotron 3.5 Super VL](https://www.anchorterminal.com/compare/muse-spark-open-vs-nemotron-3-5-super-vl.md)\n- [Muse Spark Open vs Novita AI](https://www.anchorterminal.com/compare/muse-spark-open-vs-novita-ai.md)\n- [Muse Spark Open vs OpenAI API](https://www.anchorterminal.com/compare/muse-spark-open-vs-openai-api.md)\n- [Muse Spark Open vs OpenRouter](https://www.anchorterminal.com/compare/muse-spark-open-vs-openrouter.md)\n- [Muse Spark Open vs Prism Inference](https://www.anchorterminal.com/compare/muse-spark-open-vs-prism-inference.md)\n- [Muse Spark Open vs Router.com (Ramp Router)](https://www.anchorterminal.com/compare/muse-spark-open-vs-ramp-router.md)\n- [Muse Spark Open vs Beam 1.0](https://www.anchorterminal.com/compare/muse-spark-open-vs-reflection-beam.md)\n- [Muse Spark Open vs RouterPlus](https://www.anchorterminal.com/compare/muse-spark-open-vs-routerplus.md)\n- [Muse Spark Open vs SambaCloud](https://www.anchorterminal.com/compare/muse-spark-open-vs-sambanova.md)\n- [Muse Spark Open vs SiliconFlow](https://www.anchorterminal.com/compare/muse-spark-open-vs-siliconflow.md)\n- [Muse Spark Open vs StepFun API](https://www.anchorterminal.com/compare/muse-spark-open-vs-stepfun-api.md)\n- [Muse Spark Open vs Together AI Inference](https://www.anchorterminal.com/compare/muse-spark-open-vs-together-inference.md)\n- [Muse Spark Open vs Vercel AI Gateway](https://www.anchorterminal.com/compare/muse-spark-open-vs-vercel-ai-gateway.md)\n- [Novita AI vs Simplismart](https://www.anchorterminal.com/compare/novita-ai-vs-simplismart.md)\n- [OpenAI API vs Simplismart](https://www.anchorterminal.com/compare/openai-api-vs-simplismart.md)\n- [OpenRouter vs Simplismart](https://www.anchorterminal.com/compare/openrouter-vs-simplismart.md)\n- [Prism Inference vs Simplismart](https://www.anchorterminal.com/compare/prism-inference-vs-simplismart.md)\n- [Router.com (Ramp Router) vs Simplismart](https://www.anchorterminal.com/compare/ramp-router-vs-simplismart.md)\n- [Beam 1.0 vs Simplismart](https://www.anchorterminal.com/compare/reflection-beam-vs-simplismart.md)\n- [RouterPlus vs Simplismart](https://www.anchorterminal.com/compare/routerplus-vs-simplismart.md)\n- [SambaCloud vs Simplismart](https://www.anchorterminal.com/compare/sambanova-vs-simplismart.md)\n- [SiliconFlow vs Simplismart](https://www.anchorterminal.com/compare/siliconflow-vs-simplismart.md)\n- [Simplismart vs StepFun API](https://www.anchorterminal.com/compare/simplismart-vs-stepfun-api.md)\n- [Simplismart vs Together AI Inference](https://www.anchorterminal.com/compare/simplismart-vs-together-inference.md)\n- [Simplismart vs Vercel AI Gateway](https://www.anchorterminal.com/compare/simplismart-vs-vercel-ai-gateway.md)\n- [Nemotron 3.5 Super VL vs Simplismart](https://www.anchorterminal.com/compare/nemotron-3-5-super-vl-vs-simplismart.md)\n",
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