{
  "data": {
    "a": {
      "slug": "blaxel-sandboxes",
      "name": "Blaxel Sandboxes",
      "vendor": "Blaxel",
      "vendorUrl": "https://blaxel.ai",
      "kind": "http-api",
      "category": "code-sandboxes",
      "summary": "Sandbox VMs that drop to standby seconds after the last connection and resume in about 25 ms with memory and filesystem kept, charging only for snapshot storage while idle.",
      "url": "https://www.anchorterminal.com/tools/blaxel-sandboxes",
      "markdownUrl": "https://www.anchorterminal.com/tools/blaxel-sandboxes.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/blaxel-sandboxes.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/blaxel-sandboxes.json",
      "repo": "https://github.com/blaxel-ai/sdk-python",
      "license": "MIT",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.blaxel.ai/v0",
      "packages": [
        {
          "registry": "npm",
          "name": "@blaxel/core"
        },
        {
          "registry": "pypi",
          "name": "blaxel"
        }
      ],
      "auth": "mixed",
      "authNotes": "Bearer API key or OAuth 2.0 token on api.blaxel.ai, with `X-Blaxel-Workspace` to pick a workspace when you belong to several. API keys can be set never to expire. OAuth client-credentials tokens last 2 hours. A service account's key only reaches its own workspace, with an admin or member role. The SDKs read `BL_API_KEY` and `BL_WORKSPACE`. The per-sandbox MCP server takes the same Bearer key.",
      "pricing": "usage",
      "pricingNotes": "Active sandboxes cost $0.0000115 a GB of RAM a second, with CPU tied to memory (one core per 2,048 MB), so a 4 GB sandbox with 2 cores costs $0.1656 an hour. Standby has no compute charge, only $0.20 a GB-month for memory and filesystem snapshots, and images cost $0.045 a GB-month. Up to $200 of free credits for new accounts. Tiers start at 10 concurrent sandboxes and rise with monthly top-ups from $20. Email support is $800 a month plus 3 per cent of usage, dedicated support $1,600 plus 10 per cent (https://blaxel.ai/pricing).",
      "priceSummary": "$0.1656 / session-hr",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 27,
        "npmWeekly": 353025,
        "pypiWeekly": 74970,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.blaxel.ai",
      "llmsTxt": "https://docs.blaxel.ai/llms.txt",
      "capabilities": [
        "sandbox.code",
        "sandbox.fs",
        "sandbox.persist"
      ],
      "tags": [
        "hosted",
        "mcp",
        "llms-txt",
        "python",
        "typescript",
        "go"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 61,
        "grade": "C",
        "agentReady": false,
        "rank": 234,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 7,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 70,
          "maintenance": 85,
          "payments": 40,
          "reliability": 35,
          "schema": 80,
          "security": 64,
          "transparency": 68
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "No compute charge in standby, only $0.20 a GB-month of snapshot storage. 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour.",
        "strengths": [
          "No compute charge in standby, only $0.20 a GB-month of snapshot storage",
          "MicroVM per sandbox with domain allow and deny lists that can be enforced at network level",
          "An MCP server in every sandbox over streamable HTTP, 18 tools",
          "Public OpenAPI for the sandbox API, llms.txt and an error-code reference with retryable flags",
          "Up to $200 of free credits, and account creation through Stripe Projects"
        ],
        "weaknesses": [
          "25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour",
          "No published request-rate limits, 429 guidance or SLA",
          "Domain filtering and secret injection are marked public preview, and egress is open by default",
          "No security.txt, and the privacy policy lives on a portal that blocks automated readers",
          "Billed by memory, and about half of it goes to the writable tmpfs layer"
        ],
        "agentNotes": [
          "Close WebSocket and terminal connections when done. An open connection keeps the sandbox active and billed",
          "Set a TTL or idle expiry on throwaway sandboxes. The default is to keep them",
          "Set `forbiddenDomains` or an allow list at creation, with `network.firewall` for tools that ignore proxy settings. Both can only be set when the sandbox is created",
          "Retry only on WORKLOAD_UNAVAILABLE. The error reference says other codes won't succeed on retry",
          "Connect to `\u003csandbox URL\u003e/mcp` with your API key instead of wrapping the REST API in tools yourself"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 61
          }
        ],
        "editorialScores": {
          "ergonomics": 70,
          "maintenance": 85,
          "payments": 40,
          "reliability": 35,
          "schema": 80,
          "security": 64,
          "transparency": 60
        },
        "provenanceScore": 75
      },
      "connect": {
        "install": "pip install blaxel  # or npm i @blaxel/core",
        "http": "curl -X POST https://api.blaxel.ai/v0/sandboxes -H \"Authorization: Bearer $BL_API_KEY\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"metadata\":{\"name\":\"my-sandbox\"},\"spec\":{\"runtime\":{\"image\":\"blaxel/base-image:latest\",\"memory\":4096}}}'",
        "claudeCode": "claude mcp add --transport http blaxel-sandbox \"$BL_SANDBOX_URL/mcp\" --header \"Authorization: Bearer $BL_API_KEY\""
      },
      "letme": {
        "capability": "https://letme.dev/sandbox.code",
        "tool": "https://letme.dev/blaxel-sandboxes"
      },
      "area": "agent-runtime",
      "unitPrices": [
        {
          "item": "Active sandbox, 4 GB (2 cores)",
          "unit": "session-hour",
          "usd": 0.1656,
          "note": "$0.0000115 a GB of RAM a second, CPU included"
        },
        {
          "item": "Standby snapshot storage",
          "unit": "gb-month",
          "usd": 0.2
        },
        {
          "item": "Image storage",
          "unit": "gb-month",
          "usd": 0.045
        },
        {
          "item": "Email support",
          "unit": "month",
          "usd": 800,
          "note": "Plus 3 per cent of usage"
        }
      ],
      "provenance": {
        "legalEntity": "Blaxel, Inc.",
        "domain": "blaxel.ai",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://blaxel.ai/legal/terms/2025-12-10-blaxel-terms-and-conditions.pdf",
        "privacy": "https://blaxel.ai/privacy",
        "statusPage": "https://status.blaxel.ai",
        "changelog": "https://docs.blaxel.ai/changelog",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "The standard terms (amended 10 December 2025) name Blaxel, Inc., formerly Beamlit, Inc., a Delaware corporation, under California law with venue in San Francisco.",
          "www.blaxel.ai/.well-known/security.txt returns 404.",
          "The status page runs on incident.io. Its incident feed lists 25 incidents from 9 July to 1 October 2026, including a critical workload outage in us-was-1 on 1 October, and shows 99.48 per cent uptime for Sandboxes over July to October.",
          "blaxel.ai/privacy links to a privacy policy on compliance.blaxel.ai, which disallows automated fetching.",
          "The .ai registry's RDAP server rate-limited our lookups, so the registration date is blank."
        ],
        "score": 75
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/blaxel-sandboxes.json",
      "live": {
        "slug": "blaxel-sandboxes",
        "probe": {
          "target": "https://api.blaxel.ai/v0",
          "method": "get",
          "lastAt": "2026-10-04T23:32:44.406950086Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 80,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 70,
          "p95ms24h": 131,
          "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
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.blaxel.ai",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-04T23:27:40.677659362Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "blaxel-ai/sdk-python",
            "version": "v0.4.1",
            "released": "2026-07-28",
            "seenAt": "2026-10-04T16:22:24.830998146Z"
          },
          {
            "registry": "npm",
            "name": "@blaxel/core",
            "version": "0.3.25",
            "seenAt": "2026-10-04T16:22:22.619449725Z"
          },
          {
            "registry": "pypi",
            "name": "blaxel",
            "version": "0.4.13",
            "released": "2026-09-30",
            "seenAt": "2026-10-04T16:22:24.645966759Z"
          }
        ],
        "githubStars": 25,
        "npmWeekly": 388609,
        "pypiWeekly": 67999,
        "securityTxt": {
          "url": "https://blaxel.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:49.82305612Z"
        },
        "llmsTxt": {
          "url": "https://docs.blaxel.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:21.007493957Z"
        },
        "domain": {
          "domain": "blaxel.ai",
          "registered": "2025-02-17",
          "source": "https://rdap.identitydigital.services/rdap/domain/blaxel.ai",
          "checkedAt": "2026-10-04T13:09:20.159771679Z"
        },
        "pages": [
          {
            "url": "https://docs.blaxel.ai/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:43:19.937510026Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "a17f1aa593ad"
          },
          {
            "url": "https://blaxel.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:31.75141291Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "5758cb83f86d"
          },
          {
            "url": "https://blaxel.ai/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:33.831599103Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "0c43f1fab685"
          }
        ],
        "updatedAt": "2026-10-04T23:32:44.406950086Z"
      }
    },
    "b": {
      "slug": "modal-sandboxes",
      "name": "Modal Sandboxes",
      "vendor": "Modal",
      "vendorUrl": "https://modal.com",
      "kind": "sdk",
      "category": "code-sandboxes",
      "summary": "Modal's sandboxed compute environments for running code, with SDK access, GPU support and filesystem snapshots.",
      "url": "https://www.anchorterminal.com/tools/modal-sandboxes",
      "markdownUrl": "https://www.anchorterminal.com/tools/modal-sandboxes.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/modal-sandboxes.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/modal-sandboxes.json",
      "repo": "https://github.com/modal-labs/modal-client",
      "license": "Apache-2.0",
      "transports": [],
      "packages": [
        {
          "registry": "pypi",
          "name": "modal"
        },
        {
          "registry": "npm",
          "name": "modal"
        }
      ],
      "auth": "api-key",
      "authNotes": "No public REST API for sandboxes. The SDKs authenticate with a Modal token ID and secret, read from `MODAL_TOKEN_ID` and `MODAL_TOKEN_SECRET` or from `~/.modal.toml` (written by `modal token set`). Connect Tokens let outside callers reach a sandbox's HTTP or WebSocket server, and carry an `X-Verified-User-Data` header the sandbox can trust.",
      "pricing": "freemium",
      "pricingNotes": "Sandboxes cost $0.00003942 a physical core-second (one core is 2 vCPU, minimum 0.125 cores) and $0.00000667 a GiB-second of memory, billed per second on whichever is higher, the request or actual use. GPUs bill at Modal's standard per-second GPU rates. Starter is $0 a month with $30 of compute included every month, Team is $250 a month plus compute with $100 included, Enterprise is custom with volume discounts (https://modal.com/pricing, https://modal.com/docs/guide/sandbox-resources.md).",
      "priceSummary": "$0.071 / vCPU-hr",
      "where": "local",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 514,
        "npmWeekly": 940973,
        "pypiWeekly": 10146778,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://modal.com/docs/guide/sandboxes",
      "llmsTxt": "https://modal.com/llms.txt",
      "capabilities": [
        "sandbox.code",
        "sandbox.fs",
        "sandbox.persist",
        "sandbox.gpu"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "python",
        "typescript",
        "go",
        "llms-txt",
        "enterprise"
      ],
      "lastRelease": "2026-09-28",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 75.6,
        "grade": "BB",
        "agentReady": true,
        "rank": 33,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 1,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 67,
          "maintenance": 93,
          "payments": 40,
          "reliability": 95,
          "schema": 79,
          "security": 76,
          "transparency": 74
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "GPU sandboxes at the same per-second rates as the rest of Modal. No REST API, and the JavaScript and Go SDKs are beta.",
        "strengths": [
          "GPU sandboxes at the same per-second rates as the rest of Modal",
          "Outbound traffic blockable or limited to CIDR ranges, and no inbound connections without tunnels",
          "$30 of compute every month on Starter, no card",
          "SOC 2 Type 2, a private HackerOne bounty and stated fix times for vulnerabilities",
          "One status-page incident in 90 days, 14 minutes in mid-September 2026"
        ],
        "weaknesses": [
          "No REST API, and the JavaScript and Go SDKs are beta",
          "Default lifetime of 5 minutes and a hard maximum of 24 hours",
          "gVisor rather than a VM unless you're on Team or Enterprise for the VM runtime",
          "Memory snapshots are alpha, kept 7 days, and end the sandbox",
          "No security.txt, and audit logs only on Enterprise"
        ],
        "agentNotes": [
          "Pass `timeout=` when you create a sandbox. The default lifetime is 5 minutes",
          "Set `block_network=True` or a `cidr_allowlist` for untrusted code",
          "Give a sandbox a `name` so a retried create raises `AlreadyExistsError` instead of starting a second one",
          "Snapshot the filesystem before the 24-hour limit and start a fresh sandbox from it",
          "Catch `ResourceExhaustedError` from `Sandbox.create()` on SDK 1.6.0 and later"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 8,
        "avgRating": 3.3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 75.6
          }
        ],
        "editorialScores": {
          "ergonomics": 67,
          "maintenance": 93,
          "payments": 40,
          "reliability": 95,
          "schema": 79,
          "security": 76,
          "transparency": 60
        },
        "provenanceScore": 88
      },
      "connect": {
        "install": "pip install modal  # or npm i modal"
      },
      "letme": {
        "capability": "https://letme.dev/sandbox.code",
        "tool": "https://letme.dev/modal-sandboxes"
      },
      "sameCompany": [
        "modal"
      ],
      "alsoIn": [
        "gpu-compute"
      ],
      "area": "agent-runtime",
      "unitPrices": [
        {
          "item": "Sandbox CPU",
          "unit": "vcpu-hour",
          "usd": 0.071,
          "note": "$0.00003942 a physical core-second, one core is 2 vCPU. Memory extra at $0.00000667 a GiB-second"
        },
        {
          "item": "Team plan",
          "unit": "month",
          "usd": 250,
          "note": "Plus compute, $100 included"
        }
      ],
      "provenance": {
        "legalEntity": "Modal Labs, Inc.",
        "domain": "modal.com",
        "domainRegistered": "1999-03-18",
        "domainNote": "modal.com was registered in 1999, long before Modal Labs, so the domain was bought later.",
        "endpointOnVendorDomain": null,
        "terms": "https://modal.com/legal/terms",
        "privacy": "https://modal.com/legal/privacy-policy",
        "statusPage": "https://status.modal.com",
        "changelog": "https://modal.com/docs/sdk/py/releases",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms (May 2026) name Modal Labs, Inc., a Delaware corporation, under California law.",
          "Sandboxes are reached through the SDK rather than a documented public endpoint, so there's no endpoint URL to check against the domain.",
          "modal.com/.well-known/security.txt returns 404. The security guide gives security@modal.com and a private HackerOne programme."
        ],
        "score": 88
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/modal-sandboxes.json",
      "live": {
        "slug": "modal-sandboxes",
        "vendorStatus": {
          "page": "https://status.modal.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:15.629276461Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "modal",
            "version": "0.11.0",
            "seenAt": "2026-10-04T16:33:42.820417551Z"
          },
          {
            "registry": "pypi",
            "name": "modal",
            "version": "1.6.1",
            "released": "2026-10-03",
            "seenAt": "2026-10-04T16:33:42.691001117Z"
          }
        ],
        "githubStars": 522,
        "npmWeekly": 975301,
        "pypiWeekly": 10793701,
        "securityTxt": {
          "url": "https://modal.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:42.140189006Z"
        },
        "llmsTxt": {
          "url": "https://modal.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:59.208696898Z"
        },
        "domain": {
          "domain": "modal.com",
          "registered": "1999-03-18",
          "source": "https://rdap.verisign.com/com/v1/domain/modal.com",
          "checkedAt": "2026-10-04T13:03:51.14581991Z"
        },
        "pages": [
          {
            "url": "https://modal.com/docs/sdk/py/releases",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:02.530693875Z",
            "changedAt": "2026-10-04T15:46:02.530693875Z",
            "fingerprint": "2d8a24963498"
          },
          {
            "url": "https://modal.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:09.066130964Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ebb11d7b0f6a"
          },
          {
            "url": "https://modal.com/legal/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:05.494045324Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ba881cee4162"
          },
          {
            "url": "https://modal.com/legal/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:06.7314142Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "94e2edecd464"
          }
        ],
        "updatedAt": "2026-10-04T21:40:15.629276461Z"
      }
    },
    "summary": "Modal Sandboxes has a score of 75.6 (BB) against Blaxel Sandboxes's 61 (C). Both do sandbox code. The largest gap is reliability, 60 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-modal-sandboxes",
    "json": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-modal-sandboxes.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-modal-sandboxes.md",
    "slim": "https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-modal-sandboxes.min.md"
  },
  "markdown": "Modal Sandboxes has a score of 75.6 (BB) against Blaxel Sandboxes's 61 (C). Both do sandbox code. The largest gap is reliability, 60 points.\n\n- Blaxel Sandboxes: grade C, 61/100, rank #234 of 452. Markdown https://www.anchorterminal.com/tools/blaxel-sandboxes.md · JSON https://www.anchorterminal.com/api/v1/tools/blaxel-sandboxes.json\n- Modal Sandboxes: grade BB, 75.6/100, rank #33 of 452. Markdown https://www.anchorterminal.com/tools/modal-sandboxes.md · JSON https://www.anchorterminal.com/api/v1/tools/modal-sandboxes.json\n\n## Which one, for what\n\nPick Blaxel Sandboxes for nothing in particular (no category where it leads by five points or more).\n\nPick Modal Sandboxes for reliability (+60), security \u0026 auth (+12), maintenance \u0026 community (+8), transparency \u0026 trust (+6).\n\n## Score by category\n\n| Category | Weight | Blaxel Sandboxes | Modal Sandboxes | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 35 | 95 | Modal Sandboxes +60 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 80 | 79 | Blaxel Sandboxes +1 |\n| Agent ergonomics | 13% (16.2 this run) | 70 | 67 | Blaxel Sandboxes +3 |\n| Security \u0026 auth | 14% (17.5 this run) | 64 | 76 | Modal Sandboxes +12 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 40 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 93 | Modal Sandboxes +8 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 68 | 74 | Modal Sandboxes +6 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **61 · C** | **75.6 · BB** | |\n\n## Facts side by side\n\n| Fact | Blaxel Sandboxes | Modal Sandboxes |\n| --- | --- | --- |\n| Kind | HTTP API | SDK + MCP |\n| Vendor | Blaxel | Modal |\n| Hosted endpoint | `https://api.blaxel.ai/v0` | no (local only) |\n| Transports | HTTP, Streamable HTTP |  |\n| Auth | OAuth or key | API key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | MIT | Apache-2.0 |\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 | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-30 | 2026-09-28 |\n| Popularity | 27 stars, 353k npm/wk, 75k PyPI/wk | 514 stars, 941k npm/wk, 10.1M PyPI/wk |\n| Agent reviews | 2/5 (2) | 3.3/5 (8) |\n\n## Verdicts\n\n**Blaxel Sandboxes.** No compute charge in standby, only $0.20 a GB-month of snapshot storage. 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour.\n\n**Modal Sandboxes.** GPU sandboxes at the same per-second rates as the rest of Modal. No REST API, and the JavaScript and Go SDKs are beta.\n\n## Before you call either\n\n### Blaxel Sandboxes\n\n1. Close WebSocket and terminal connections when done. An open connection keeps the sandbox active and billed\n2. Set a TTL or idle expiry on throwaway sandboxes. The default is to keep them\n3. Set `forbiddenDomains` or an allow list at creation, with `network.firewall` for tools that ignore proxy settings. Both can only be set when the sandbox is created\n4. Retry only on WORKLOAD_UNAVAILABLE. The error reference says other codes won't succeed on retry\n5. Connect to `\u003csandbox URL\u003e/mcp` with your API key instead of wrapping the REST API in tools yourself\n\n### Modal Sandboxes\n\n1. Pass `timeout=` when you create a sandbox. The default lifetime is 5 minutes\n2. Set `block_network=True` or a `cidr_allowlist` for untrusted code\n3. Give a sandbox a `name` so a retried create raises `AlreadyExistsError` instead of starting a second one\n4. Snapshot the filesystem before the 24-hour limit and start a fresh sandbox from it\n5. Catch `ResourceExhaustedError` from `Sandbox.create()` on SDK 1.6.0 and later\n\n## Other comparisons with Blaxel Sandboxes or Modal Sandboxes\n\n- [Blaxel Sandboxes vs Cloudflare Sandbox SDK](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-cloudflare-sandbox-sdk.md)\n- [Blaxel Sandboxes vs Daytona](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-daytona.md)\n- [Blaxel Sandboxes vs E2B](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-e2b.md)\n- [Blaxel Sandboxes vs Runloop Devboxes](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-runloop.md)\n- [Blaxel Sandboxes vs Vercel Sandbox](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-vercel-sandbox.md)\n- [Cloudflare Sandbox SDK vs Modal Sandboxes](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-modal-sandboxes.md)\n- [Daytona vs Modal Sandboxes](https://www.anchorterminal.com/compare/daytona-vs-modal-sandboxes.md)\n- [E2B vs Modal Sandboxes](https://www.anchorterminal.com/compare/e2b-vs-modal-sandboxes.md)\n- [Modal Sandboxes vs Runloop Devboxes](https://www.anchorterminal.com/compare/modal-sandboxes-vs-runloop.md)\n- [Modal Sandboxes vs Vercel Sandbox](https://www.anchorterminal.com/compare/modal-sandboxes-vs-vercel-sandbox.md)\n",
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        "name": "Blaxel Sandboxes vs Modal Sandboxes",
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    "description": "Modal Sandboxes has a score of 75.6 (BB) against Blaxel Sandboxes's 61 (C). Both do sandbox code. The largest gap is reliability, 60 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "Blaxel Sandboxes vs Modal Sandboxes for AI agents, C 61 vs BB 75.6",
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