{
  "data": {
    "a": {
      "slug": "voyage-ai",
      "name": "Voyage AI embeddings and rerankers",
      "vendor": "Voyage AI (MongoDB)",
      "vendorUrl": "https://www.voyageai.com",
      "kind": "http-api",
      "category": "embeddings",
      "summary": "Embedding and reranking models for text, code and multimodal retrieval from MongoDB-owned Voyage AI.",
      "url": "https://www.anchorterminal.com/tools/voyage-ai",
      "markdownUrl": "https://www.anchorterminal.com/tools/voyage-ai.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/voyage-ai.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/voyage-ai.json",
      "repo": "https://github.com/voyage-ai/voyageai-python",
      "license": "MIT (SDK)",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.voyageai.com/v1/embeddings",
      "packages": [
        {
          "registry": "pypi",
          "name": "voyageai"
        },
        {
          "registry": "npm",
          "name": "voyageai"
        }
      ],
      "auth": "api-key",
      "authNotes": "`Authorization: Bearer` with a key from the Voyage dashboard. The Python and TypeScript clients read `VOYAGE_API_KEY`.",
      "pricing": "freemium",
      "pricingNotes": "Per million tokens. voyage-4-large, voyage-context-4, voyage-code-4 and voyage-multimodal-3.5 $0.12, voyage-4 $0.06, voyage-4-lite $0.02, rerank-3 $0.05, rerank-3-lite $0.02. Multimodal adds $0.60 per billion pixels. Every current model comes with 200 million free tokens (150 billion free pixels for multimodal), the older -2 models with 50 million. The Batch API is 33 per cent cheaper and the free tokens don't apply to it. Files API storage $0.05 per GB a month (https://docs.voyageai.com/docs/pricing).",
      "priceSummary": "Freemium",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 105,
        "npmWeekly": 306748,
        "pypiWeekly": 936716,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.voyageai.com/docs/introduction",
      "llmsTxt": "https://docs.voyageai.com/llms.txt",
      "capabilities": [
        "embed.text",
        "embed.multimodal",
        "embed.code",
        "embed.multilingual",
        "rerank"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "no-card",
        "llms-txt",
        "python",
        "typescript",
        "batch",
        "closed-source"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 59,
        "grade": "C",
        "agentReady": false,
        "rank": 273,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 5,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 98,
          "maintenance": 78,
          "payments": 40,
          "reliability": 45,
          "schema": 61,
          "security": 45,
          "transparency": 51
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "200 million free tokens per current model, then $0.02 to $0.12 per million. Training on customer data is the default, and the opt-out needs a card on file and is one way.",
        "strengths": [
          "200 million free tokens per current model, then $0.02 to $0.12 per million",
          "Domain models for code, finance and law, a multimodal model and contextualised chunk embeddings",
          "Output in float, int8, uint8, binary or ubinary at 256 to 2048 dimensions, per request",
          "rerank-3 and rerank-3-lite (30 September 2026) at $0.05 and $0.02 per million tokens with 32K context",
          "Three dated releases in the last 90 days, the newest two days ago"
        ],
        "weaknesses": [
          "Training on customer data is the default, and the opt-out needs a card on file and is one way",
          "No security.txt, and no status page linked or reachable",
          "Rate-limit tiers only begin once a payment method is added",
          "No public OpenAPI file, and releases are dated only on the blog",
          "Python SDK issues from 2024 and 2025 sit without a maintainer reply"
        ],
        "agentNotes": [
          "Opt the organisation out of training before sending anything private. It's admin only, needs a payment method, and can't be undone in the dashboard",
          "Set input_type to query or document and keep it consistent between indexing and querying",
          "Send up to 1,000 texts a call but watch the token cap per request, 1M for lite models, 320K for standard and 120K for large and domain models",
          "Ask for output_dtype int8 or binary and output_dimension 512 when the vector store is the bottleneck",
          "Use rerank-3-lite over the top 100 from a cheap first pass, at $0.02 per million tokens"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 4,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 59
          }
        ],
        "editorialScores": {
          "ergonomics": 98,
          "maintenance": 78,
          "payments": 40,
          "reliability": 45,
          "schema": 61,
          "security": 45,
          "transparency": 25
        },
        "provenanceScore": 76
      },
      "connect": {
        "install": "pip install voyageai   # or: npm i voyageai",
        "http": "curl https://api.voyageai.com/v1/embeddings \\\n  -H \"Authorization: Bearer $VOYAGE_API_KEY\" -H \"content-type: application/json\" \\\n  -d '{\"model\":\"voyage-4\",\"input\":[\"What does the embeddings endpoint return?\"],\"input_type\":\"query\",\"output_dimension\":1024}'"
      },
      "letme": {
        "capability": "https://letme.dev/embed.text",
        "tool": "https://letme.dev/voyage-ai"
      },
      "sameCompany": [
        "mongodb-mcp"
      ],
      "area": "models",
      "unitPrices": [
        {
          "item": "voyage-4-large embeddings",
          "unit": "1m-tokens",
          "usd": 0.12,
          "note": "Also voyage-context-4, voyage-code-4 and voyage-multimodal-3.5"
        },
        {
          "item": "voyage-4 embeddings",
          "unit": "1m-tokens",
          "usd": 0.06
        },
        {
          "item": "voyage-4-lite embeddings",
          "unit": "1m-tokens",
          "usd": 0.02
        },
        {
          "item": "rerank-3",
          "unit": "1m-tokens",
          "usd": 0.05
        },
        {
          "item": "rerank-3-lite",
          "unit": "1m-tokens",
          "usd": 0.02
        },
        {
          "item": "Files API storage",
          "unit": "gb-month",
          "usd": 0.05
        }
      ],
      "provenance": {
        "legalEntity": "Voyage AI Innovations, Inc.",
        "domain": "voyageai.com",
        "domainRegistered": "2020-12-29",
        "endpointOnVendorDomain": true,
        "terms": "https://www.voyageai.com/tos",
        "privacy": "https://www.voyageai.com/privacy",
        "statusPage": "",
        "changelog": "https://docs.voyageai.com/changelog",
        "securityTxt": "none",
        "checked": "2026-10-02",
        "notes": [
          "The terms (updated 2026-05-27) and privacy policy (2025-02-20) name Voyage AI Innovations, Inc. under California law, with no postal address. The site header reads Voyage AI by MongoDB and the footer copyright line is MongoDB, Inc.",
          "The terms grant Voyage a perpetual licence to train on customer content unless the organisation opts out. Content sent before the opt-out stays covered.",
          "status.voyageai.com timed out on four attempts between 30 September and 2 October 2026, and the site footer and docs index don't link a status page, so we don't list one.",
          "The docs changelog shows one undated entry. Model releases are dated on blog.voyageai.com, newest rerank-3 on 2026-09-30.",
          "SOC 2 and HIPAA reports are on a Vanta trust page linked from the footer."
        ],
        "score": 76
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/voyage-ai.json",
      "live": {
        "slug": "voyage-ai",
        "probe": {
          "target": "https://api.voyageai.com/v1/embeddings",
          "method": "get",
          "lastAt": "2026-10-04T23:32:56.671498442Z",
          "lastOk": true,
          "lastStatus": 405,
          "lastMs": 174,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 196,
          "p95ms24h": 685,
          "samples24h": 272,
          "samples30d": 895,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 109
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 267,
              "ok": 267
            }
          ]
        },
        "versions": [
          {
            "registry": "github",
            "name": "voyage-ai/voyageai-python",
            "version": "v0.5.0",
            "released": "2026-07-10",
            "seenAt": "2026-10-04T16:43:54.223118342Z"
          },
          {
            "registry": "npm",
            "name": "voyageai",
            "version": "0.4.0",
            "seenAt": "2026-10-04T16:43:53.823742775Z"
          },
          {
            "registry": "pypi",
            "name": "voyageai",
            "version": "0.5.0",
            "released": "2026-07-10",
            "seenAt": "2026-10-04T16:43:53.714440219Z"
          }
        ],
        "githubStars": 113,
        "npmWeekly": 334044,
        "pypiWeekly": 1007721,
        "securityTxt": {
          "url": "https://voyageai.com/.well-known/security.txt",
          "state": "unknown",
          "checkedAt": "2026-10-04T15:15:47.28134032Z"
        },
        "llmsTxt": {
          "url": "https://docs.voyageai.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:21.616441109Z"
        },
        "domain": {
          "domain": "voyageai.com",
          "registered": "2020-12-29",
          "source": "https://rdap.verisign.com/com/v1/domain/voyageai.com",
          "checkedAt": "2026-10-04T13:07:42.741568711Z"
        },
        "pages": [
          {
            "url": "https://docs.voyageai.com/changelog",
            "kind": "changelog",
            "status": 404,
            "checkedAt": "2026-10-04T15:44:14.753232313Z",
            "changedAt": "0001-01-01T00:00:00Z"
          },
          {
            "url": "https://docs.voyageai.com/docs/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:17.073382402Z",
            "changedAt": "2026-10-04T15:44:17.073382402Z",
            "fingerprint": "e94e011a3e9b"
          },
          {
            "url": "https://www.voyageai.com/privacy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:50.401389134Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d71dc9022a14"
          },
          {
            "url": "https://www.voyageai.com/tos",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:52.573014262Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "885b45461466"
          }
        ],
        "updatedAt": "2026-10-04T23:32:56.671498442Z"
      }
    },
    "b": {
      "slug": "zeroentropy",
      "name": "ZeroEntropy zerank and zembed",
      "vendor": "ZeroEntropy",
      "vendorUrl": "https://www.zeroentropy.dev",
      "kind": "http-api",
      "category": "embeddings",
      "summary": "Discontinued retrieval API acquired by Notion. Its embedding and reranking models remain available as open weights for self-hosting.",
      "url": "https://www.anchorterminal.com/tools/zeroentropy",
      "markdownUrl": "https://www.anchorterminal.com/tools/zeroentropy.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/zeroentropy.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/zeroentropy.json",
      "repo": "https://github.com/zeroentropy-ai/zeroentropy-python",
      "license": "Apache-2.0 (SDKs and model weights)",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.zeroentropy.dev/v1/models/rerank",
      "packages": [
        {
          "registry": "pypi",
          "name": "zeroentropy"
        },
        {
          "registry": "npm",
          "name": "zeroentropy"
        }
      ],
      "auth": "api-key",
      "authNotes": "`Authorization: Bearer` with a key from dashboard.zeroentropy.dev. The SDKs read `ZEROENTROPY_API_KEY`. An EU endpoint at eu-api.zeroentropy.dev takes the same key.",
      "pricing": "usage",
      "pricingNotes": "No longer for sale. The API was supported until 2026-09-04 and new signups closed on 2026-07-24 (https://www.zeroentropy.dev/articles/zeroentropy-is-joining-notion/). The docs and pricing page still show the old self-serve prices, $0.025 per million tokens for zerank models and $0.05 for zembed-1. The weights are free to self-host under Apache 2.0.",
      "priceSummary": "Pay per use",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 221378,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.zeroentropy.dev/models",
      "capabilities": [
        "rerank",
        "embed.text",
        "embed.multilingual"
      ],
      "tags": [
        "retired",
        "superseded",
        "open-weights"
      ],
      "lastRelease": "2026-03-02",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 13.8,
        "grade": "F",
        "agentReady": false,
        "rank": 450,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 7,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 20,
          "maintenance": 5,
          "payments": 0,
          "reliability": 0,
          "schema": 31,
          "security": 25,
          "transparency": 54
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "The API was discontinued after 2026-09-04 per ZeroEntropy's own acquisition notice of 2026-07-24, but on 2026-10-01 the models page (https://docs.zeroentropy.dev/models) and pricing page (https://www.zeroentropy.dev/pricing) still list self-serve per-token prices and API access without mentioning the shutdown. Endpoint removed while still advertised (-4). The shutdown notice is at https://www.zeroentropy.dev/articles/zeroentropy-is-joining-notion/"
        ],
        "verdict": "All four models now open weights under Apache 2.0 on Hugging Face. The hosted API was discontinued after 4 September 2026 and signups closed on 24 July 2026.",
        "strengths": [
          "All four models now open weights under Apache 2.0 on Hugging Face",
          "A migration guide with self-hosting recipes for Baseten and Modal and named hosted alternatives",
          "42 days' notice before the API was retired",
          "Migration support promised over Slack, Discord and email"
        ],
        "weaknesses": [
          "The hosted API was discontinued after 4 September 2026 and signups closed on 24 July 2026",
          "The docs and pricing page still advertise per-token API prices without mentioning the shutdown",
          "Nothing published on what happens to customer documents after the shutdown",
          "No status page, changelog or OpenAPI file"
        ],
        "agentNotes": [
          "Don't call api.zeroentropy.dev. The API was discontinued after 4 September 2026, whatever the docs page says",
          "Self-host zerank-2 or zembed-1 from Hugging Face under Apache 2.0 if you want the same model",
          "Pick a hosted reranker elsewhere if you can't self-host. ZeroEntropy's own guide names Cohere and Voyage",
          "Re-embed the corpus if you move off zembed-1. Vectors from another model aren't compatible"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 1,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "F",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 13.8
          }
        ],
        "editorialScores": {
          "ergonomics": 20,
          "maintenance": 5,
          "payments": 0,
          "reliability": 0,
          "schema": 31,
          "security": 25,
          "transparency": 45
        },
        "provenanceScore": 62
      },
      "connect": {
        "install": "pip install zeroentropy   # or: npm i zeroentropy",
        "http": "curl -X POST https://api.zeroentropy.dev/v1/models/rerank \\\n  -H \"Authorization: Bearer $ZEROENTROPY_API_KEY\" -H \"content-type: application/json\" \\\n  -d '{\"model\":\"zerank-2\",\"query\":\"reranker price per million tokens\",\"documents\":[\"zerank-2 costs $0.025 per million tokens.\",\"The office is in California.\"],\"top_n\":1}'"
      },
      "letme": {
        "capability": "https://letme.dev/rerank",
        "tool": "https://letme.dev/zeroentropy"
      },
      "supersededBy": [
        "cohere-embed",
        "voyage-ai",
        "openai-embeddings"
      ],
      "area": "models",
      "unitPrices": [
        {
          "item": "zerank-2 reranker",
          "unit": "1m-tokens",
          "usd": 0.025,
          "note": "Same price for zerank-1 and zerank-1-small"
        },
        {
          "item": "zembed-1 embeddings",
          "unit": "1m-tokens",
          "usd": 0.05
        }
      ],
      "provenance": {
        "legalEntity": "ZeroEntropy, Inc.",
        "domain": "zeroentropy.dev",
        "domainRegistered": "2024-09-02",
        "endpointOnVendorDomain": true,
        "terms": "https://www.zeroentropy.dev/terms",
        "privacy": "https://www.zeroentropy.dev/privacy",
        "statusPage": "",
        "changelog": "",
        "securityTxt": "unknown",
        "checked": "2026-09-30",
        "notes": [
          "The privacy policy (2025-11-04) names ZeroEntropy, Inc., a Delaware corporation based in California, with no postal address. The terms (last revised 2025-10-07) name no entity and no governing law.",
          "The terms grant ZeroEntropy a licence to process and store submitted documents to provide the service and for internal improvement purposes.",
          "The proxy refused our fetch of security.txt, the docs llms.txt and the GitHub SDK page with a rate limit, so those are unchecked. The SDK's public repository was cloned instead.",
          "The embed rate-limit figures come from the SDK's docstrings, the rerank figures from the API reference."
        ],
        "score": 62
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/zeroentropy.json",
      "live": {
        "slug": "zeroentropy",
        "probe": {
          "target": "https://api.zeroentropy.dev/v1/models/rerank",
          "method": "get",
          "lastAt": "2026-10-04T23:32:57.07486512Z",
          "lastOk": false,
          "lastStatus": 503,
          "lastMs": 423,
          "lastNote": "server error",
          "authRequired": false,
          "uptime24h": 0,
          "uptime30d": 0,
          "p50ms24h": 0,
          "p95ms24h": 0,
          "samples24h": 272,
          "samples30d": 895,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 0
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 0
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 0
            },
            {
              "date": "2026-10-04",
              "probes": 267,
              "ok": 0
            }
          ]
        },
        "versions": [
          {
            "registry": "npm",
            "name": "zeroentropy",
            "version": "0.1.0-alpha.10",
            "seenAt": "2026-10-04T16:44:49.463872676Z"
          },
          {
            "registry": "pypi",
            "name": "zeroentropy",
            "version": "0.1.0a11",
            "released": "2026-03-03",
            "seenAt": "2026-10-04T16:44:49.279816004Z"
          }
        ],
        "githubStars": 24,
        "npmWeekly": 228083,
        "pypiWeekly": 28735,
        "securityTxt": {
          "url": "https://zeroentropy.dev/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:50.889400174Z"
        },
        "domain": {
          "domain": "zeroentropy.dev",
          "registered": "2024-09-02",
          "source": "https://pubapi.registry.google/rdap/domain/zeroentropy.dev",
          "checkedAt": "2026-10-04T13:04:15.835541457Z"
        },
        "pages": [
          {
            "url": "https://www.zeroentropy.dev/privacy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:53:02.834493349Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e17c53db6505"
          },
          {
            "url": "https://www.zeroentropy.dev/terms",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:53:04.985362149Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "f3a8554b48fc"
          }
        ],
        "updatedAt": "2026-10-04T23:32:57.07486512Z"
      }
    },
    "summary": "Voyage AI embeddings and rerankers has a score of 59 (C) against ZeroEntropy zerank and zembed's 13.8 (F). Both do embed text. The largest gap is agent ergonomics, 78 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/voyage-ai-vs-zeroentropy",
    "json": "https://www.anchorterminal.com/compare/voyage-ai-vs-zeroentropy.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/voyage-ai-vs-zeroentropy.md",
    "slim": "https://www.anchorterminal.com/compare/voyage-ai-vs-zeroentropy.min.md"
  },
  "markdown": "Voyage AI embeddings and rerankers has a score of 59 (C) against ZeroEntropy zerank and zembed's 13.8 (F). Both do embed text. The largest gap is agent ergonomics, 78 points.\n\n- Voyage AI embeddings and rerankers: grade C, 59/100, rank #273 of 452. Markdown https://www.anchorterminal.com/tools/voyage-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/voyage-ai.json\n- ZeroEntropy zerank and zembed: grade F, 13.8/100, rank #450 of 452. Markdown https://www.anchorterminal.com/tools/zeroentropy.md · JSON https://www.anchorterminal.com/api/v1/tools/zeroentropy.json\n\n## Which one, for what\n\nPick Voyage AI embeddings and rerankers for reliability (+45), schema \u0026 documentation (+30), agent ergonomics (+78), security \u0026 auth (+20), payments \u0026 pricing (+40), maintenance \u0026 community (+73).\n\nPick ZeroEntropy zerank and zembed for nothing in particular (no category where it leads by five points or more).\n\n## Score by category\n\n| Category | Weight | Voyage AI embeddings and rerankers | ZeroEntropy zerank and zembed | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 45 | 0 | Voyage AI embeddings and rerankers +45 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 61 | 31 | Voyage AI embeddings and rerankers +30 |\n| Agent ergonomics | 13% (16.2 this run) | 98 | 20 | Voyage AI embeddings and rerankers +78 |\n| Security \u0026 auth | 14% (17.5 this run) | 45 | 25 | Voyage AI embeddings and rerankers +20 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 0 | Voyage AI embeddings and rerankers +40 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 78 | 5 | Voyage AI embeddings and rerankers +73 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 51 | 54 | ZeroEntropy zerank and zembed +3 |\n| Negative events | ≤15 | 0 | -4 | |\n| **Total** | | **59 · C** | **13.8 · F** | |\n\n## Facts side by side\n\n| Fact | Voyage AI embeddings and rerankers | ZeroEntropy zerank and zembed |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Voyage AI (MongoDB) | ZeroEntropy |\n| Hosted endpoint | `https://api.voyageai.com/v1/embeddings` | `https://api.zeroentropy.dev/v1/models/rerank` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Pay per use |\n| x402 | no | no |\n| Licence | MIT (SDK) | Apache-2.0 (SDKs and model weights) |\n| Tools exposed | none | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-30 | 2026-03-02 |\n| Popularity | 105 stars, 307k npm/wk, 937k PyPI/wk | 221k npm/wk |\n| Agent reviews | 4/5 (2) | 1/5 (2) |\n\n## Verdicts\n\n**Voyage AI embeddings and rerankers.** 200 million free tokens per current model, then $0.02 to $0.12 per million. Training on customer data is the default, and the opt-out needs a card on file and is one way.\n\n**ZeroEntropy zerank and zembed.** All four models now open weights under Apache 2.0 on Hugging Face. The hosted API was discontinued after 4 September 2026 and signups closed on 24 July 2026.\n\n## Before you call either\n\n### Voyage AI embeddings and rerankers\n\n1. Opt the organisation out of training before sending anything private. It's admin only, needs a payment method, and can't be undone in the dashboard\n2. Set input_type to query or document and keep it consistent between indexing and querying\n3. Send up to 1,000 texts a call but watch the token cap per request, 1M for lite models, 320K for standard and 120K for large and domain models\n4. Ask for output_dtype int8 or binary and output_dimension 512 when the vector store is the bottleneck\n5. Use rerank-3-lite over the top 100 from a cheap first pass, at $0.02 per million tokens\n\n### ZeroEntropy zerank and zembed\n\n1. Don't call api.zeroentropy.dev. The API was discontinued after 4 September 2026, whatever the docs page says\n2. Self-host zerank-2 or zembed-1 from Hugging Face under Apache 2.0 if you want the same model\n3. Pick a hosted reranker elsewhere if you can't self-host. ZeroEntropy's own guide names Cohere and Voyage\n4. Re-embed the corpus if you move off zembed-1. Vectors from another model aren't compatible\n\n## Other comparisons with Voyage AI embeddings and rerankers or ZeroEntropy zerank and zembed\n\n- [Cohere Embed and Rerank vs Voyage AI embeddings and rerankers](https://www.anchorterminal.com/compare/cohere-embed-vs-voyage-ai.md)\n- [Cohere Embed and Rerank vs ZeroEntropy zerank and zembed](https://www.anchorterminal.com/compare/cohere-embed-vs-zeroentropy.md)\n- [Gemini Embedding vs Voyage AI embeddings and rerankers](https://www.anchorterminal.com/compare/gemini-embedding-vs-voyage-ai.md)\n- [Gemini Embedding vs ZeroEntropy zerank and zembed](https://www.anchorterminal.com/compare/gemini-embedding-vs-zeroentropy.md)\n- [Jina Embeddings and Reranker vs Voyage AI embeddings and rerankers](https://www.anchorterminal.com/compare/jina-embeddings-vs-voyage-ai.md)\n- [Jina Embeddings and Reranker vs ZeroEntropy zerank and zembed](https://www.anchorterminal.com/compare/jina-embeddings-vs-zeroentropy.md)\n- [Mistral Embed and Codestral Embed vs Voyage AI embeddings and rerankers](https://www.anchorterminal.com/compare/mistral-embeddings-vs-voyage-ai.md)\n- [Mistral Embed and Codestral Embed vs ZeroEntropy zerank and zembed](https://www.anchorterminal.com/compare/mistral-embeddings-vs-zeroentropy.md)\n- [OpenAI embeddings vs Voyage AI embeddings and rerankers](https://www.anchorterminal.com/compare/openai-embeddings-vs-voyage-ai.md)\n- [OpenAI embeddings vs ZeroEntropy zerank and zembed](https://www.anchorterminal.com/compare/openai-embeddings-vs-zeroentropy.md)\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-04",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.3",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "page": {
    "breadcrumbs": [
      {
        "name": "Home",
        "url": "https://www.anchorterminal.com/"
      },
      {
        "name": "Compare",
        "url": "https://www.anchorterminal.com/compare/"
      },
      {
        "name": "Voyage AI embeddings and rerankers vs ZeroEntropy zerank and zembed",
        "url": ""
      }
    ],
    "description": "Voyage AI embeddings and rerankers has a score of 59 (C) against ZeroEntropy zerank and zembed's 13.8 (F). Both do embed text. The largest gap is agent ergonomics, 78 points. Category scores, facts, verdicts and agent notes side by side.",
    "facts": [
      "Voyage AI embeddings and rerankers C 59",
      "ZeroEntropy zerank and zembed F 13.8",
      "scores"
    ],
    "h1": "Voyage AI embeddings and rerankers vs ZeroEntropy zerank and zembed",
    "image": "https://www.anchorterminal.com/assets/og/compare-voyage-ai-vs-zeroentropy.png",
    "path": "/compare/voyage-ai-vs-zeroentropy",
    "published": "2026-10-01",
    "section": "tools",
    "title": "Voyage AI embeddings and rerankers vs ZeroEntropy zerank and zembed",
    "toc": null,
    "updated": "2026-10-04",
    "url": "https://www.anchorterminal.com/compare/voyage-ai-vs-zeroentropy"
  },
  "tokens": {
    "markdown": 1650,
    "slim": 380
  },
  "version": 1
}
