{ "data": { "a": { "slug": "mastra", "name": "Mastra", "vendor": "Kepler Software, Inc.", "vendorUrl": "https://mastra.ai", "kind": "framework", "category": "frameworks", "summary": "Open-source TypeScript framework from Mastra for building agents and workflows, with memory, RAG, evals, tracing, an MCP client and server, and a local Studio. An optional hosted platform runs deployments and observability.", "url": "https://www.anchorterminal.com/tools/mastra", "markdownUrl": "https://www.anchorterminal.com/tools/mastra.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mastra.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mastra.json", "dns": "mastra.grade.anchorterminal.com", "repo": "https://github.com/mastra-ai/mastra", "license": "Apache-2.0 for the core. Code under ee/ directories is source-available under the Mastra Enterprise License, free for development and testing", "transports": [], "packages": [ { "registry": "npm", "name": "@mastra/core" }, { "registry": "npm", "name": "@mastra/mcp" }, { "registry": "npm", "name": "mastra" } ], "auth": "api-key", "authNotes": "The framework has no account of its own. The model router takes `provider/model` strings and each provider's own key. The hosted Mastra platform needs an account.", "pricing": "free", "pricingNotes": "Free and open source. You pay for model calls. The hosted platform has a $0 Starter plan with 100K observability events and 24 CPU hours, then $10 per 100K events and $0.35 a CPU hour, and Teams at $250 a month (https://mastra.ai/pricing, checked 2026-11-06).", "priceSummary": "Free · OSS", "where": "library", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Mastra docs, the repository or the pricing page (checked 2026-10-06).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 29383, "npmWeekly": 3116983, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://mastra.ai/docs", "llmsTxt": "https://mastra.ai/llms.txt", "capabilities": [ "agent.framework", "agent.durable", "agent.mcp-client", "agent.multi-agent" ], "tags": [ "framework", "typescript", "open-source", "llms-txt", "mcp", "telemetry-default-on" ], "lastRelease": "2026-11-04", "graded": true, "anchor": { "graded": true, "score": 74.2, "grade": "BB", "agentReady": true, "rank": 91, "ranked": true, "rankOf": 1510, "categoryRank": 7, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 92, "maintenance": 96, "payments": 60, "reliability": 87, "schema": 98, "security": 67, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": -8, "negativeNotes": [ "2026-06-17. Malicious versions of Mastra's npm packages were published, among them @mastra/core 1.42.1 at 01:15 UTC, and GitHub malware advisories that day (GHSA-pp62-grrw-hvfp and others) say any machine that installed one should be treated as fully compromised. All 21 Mastra packages we checked on OSV carry one. Mastra published clean versions the same day and the changelogs name an \"easy-day-js\" supply-chain incident, but we found no advisory or post-mortem from Mastra. Fixed and under four months old, so 8 points. https://osv.dev/vulnerability/MAL-2026-6011" ], "verdict": "A TypeScript framework with agents, workflows with suspend and resume, memory, an MCP client and server, per-server tool approval and built-in guardrail processors including a prompt-injection detector. On 17 June 2026 malicious versions of its npm packages were published, and the CLI, server and Studio send usage analytics by default, with token counts every 15 minutes.", "bestFor": "TypeScript teams that want agents, workflows, memory, evals and a local Studio in one framework.", "strengths": [ "MCP client with requireToolApproval per server or per tool, allowedHosts and a curated environment for stdio servers", "Guardrail processors for prompt injection, PII, moderation and cost limits, run on input and output", "Workflows with snapshots, suspend and resume, and durable agents on Inngest or an evented engine", "Apache 2.0 core, 1.0 since 20 January 2026, with 27 releases of @mastra/core in 90 days to 6 November", "llms.txt with a when-to-use section and condensed instructions for coding agents" ], "weaknesses": [ "Malicious versions of Mastra npm packages, including @mastra/core 1.42.1, were published on 17 June 2026", "CLI, server and Studio send usage analytics by default, including token counts every 15 minutes, off with MASTRA_TELEMETRY_DISABLED=1", "No SECURITY.md, no security.txt and no bug bounty found", "Code under ee/ is source-available under the Mastra Enterprise License, not Apache 2.0", "TypeScript only, Node 22.13 or newer" ], "agentNotes": [ "Set MASTRA_TELEMETRY_DISABLED=1 in every environment that runs the CLI, the server or Studio", "Pin exact versions with a lockfile, and make sure no 17 June 2026 release such as @mastra/core 1.42.1 is installed", "Set requireToolApproval on MCP servers that write, and allowedHosts when server URLs come from configuration", "Add PromptInjectionDetector as an input processor when tools return web or user content", "Use supervisor agents through generate() or stream(). `.network()` is deprecated" ], "metrics": { "kind": "library", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 74.2 } ], "editorialScores": { "ergonomics": 92, "maintenance": 96, "payments": 60, "reliability": 87, "schema": 98, "security": 67, "transparency": 72 }, "provenanceScore": 71, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm create mastra@latest # or: npm i @mastra/core @mastra/mcp" }, "letme": { "capability": "https://letme.dev/agent.framework", "tool": "https://letme.dev/mastra" }, "area": "frameworks", "provenance": { "legalEntity": "Kepler Software, Inc.", "domain": "mastra.ai", "domainRegistered": "2024-10-01", "endpointOnVendorDomain": null, "terms": "https://mastra.ai/terms-of-service", "privacy": "https://mastra.ai/privacy-policy", "statusPage": "https://statuspage.incident.io/mastra-platform", "changelog": "https://github.com/mastra-ai/mastra/blob/main/packages/core/CHANGELOG.md", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "The privacy policy names Kepler Software Inc as operator of mastra.ai and shows a last-published date of 25 April 2025.", "The licence file is copyright Kepler Software, Inc.", "mastra.ai/.well-known/security.txt returns 404 (rechecked 6 November 2026), and the repository has no SECURITY.md.", "RDAP gives mastra.ai a registration date of 2024-10-01.", "The status page covers the hosted platform, not the framework." ], "score": 71 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mastra.json", "live": { "slug": "mastra", "vendorStatus": { "page": "https://statuspage.incident.io/mastra-platform", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T19:22:27.41396844Z" }, "versions": [ { "registry": "github", "name": "mastra-ai/mastra", "version": "@mastra/core@1.82.0", "released": "2026-11-04", "seenAt": "2026-11-06T23:43:05.299046627Z" }, { "registry": "npm", "name": "@mastra/core", "version": "1.82.0", "seenAt": "2026-11-06T23:43:01.102546802Z" }, { "registry": "npm", "name": "@mastra/mcp", "version": "2.8.0", "seenAt": "2026-11-06T23:43:01.962943277Z" }, { "registry": "npm", "name": "mastra", "version": "1.38.0", "seenAt": "2026-11-06T23:43:03.330470883Z" } ], "githubStars": 29384, "npmWeekly": 3116983, "securityTxt": { "url": "https://mastra.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:45.130857018Z" }, "llmsTxt": { "url": "https://mastra.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:57.501317652Z" }, "pages": [ { "url": "https://raw.githubusercontent.com/mastra-ai/mastra/main/packages/core/CHANGELOG.md", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:21:37.959722321Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0bdb3498f7aa" }, { "url": "https://mastra.ai/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:13:54.312763229Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0204673a21a8" }, { "url": "https://mastra.ai/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:13:56.829832485Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1621ce3063d8" }, { "url": "https://mastra.ai/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:13:58.580048861Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "edbcf520f26c" } ], "updatedAt": "2026-11-07T19:22:27.41396844Z" } }, "answer": "AI SDK scores 89.8 (AA) on agent readiness against Mastra's 74.2 (BB), and leads in 6 of 7 scored categories.", "b": { "slug": "vercel-ai-sdk", "name": "AI SDK", "vendor": "Vercel Inc.", "vendorUrl": "https://vercel.com", "kind": "framework", "category": "frameworks", "summary": "Open-source TypeScript toolkit from Vercel for building AI applications and agents, with a provider-agnostic API, a ToolLoopAgent, an MCP client and UI hooks for React, Vue, Svelte and Angular.", "url": "https://www.anchorterminal.com/tools/vercel-ai-sdk", "markdownUrl": "https://www.anchorterminal.com/tools/vercel-ai-sdk.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/vercel-ai-sdk.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/vercel-ai-sdk.json", "dns": "vercel-ai-sdk.grade.anchorterminal.com", "repo": "https://github.com/vercel/ai", "license": "Apache-2.0", "transports": [], "packages": [ { "registry": "npm", "name": "ai" }, { "registry": "npm", "name": "@ai-sdk/mcp" }, { "registry": "npm", "name": "@ai-sdk/workflow" } ], "auth": "api-key", "authNotes": "The SDK has no account of its own. Each provider package takes that provider's key. Plain string model IDs resolve through Vercel's AI Gateway by default, which needs AI_GATEWAY_API_KEY or a Vercel OIDC token.", "pricing": "free", "pricingNotes": "Free and open source. You pay for model calls. The optional AI Gateway charges providers' list prices with no markup, from prepaid credits, with a free monthly credit on a subset of models (https://vercel.com/docs/ai-gateway/pricing, checked 2026-11-06).", "priceSummary": "Free · OSS", "where": "library", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the AI SDK docs, the vercel/ai repository's packages or the AI Gateway pricing page. The tools registry in the repository lists a third-party x402 marketplace tool (checked 2026-10-06).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 27781, "npmWeekly": 44868298, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://ai-sdk.dev/docs", "llmsTxt": "https://ai-sdk.dev/llms.txt", "capabilities": [ "agent.framework", "agent.mcp-client", "agent.multi-agent", "agent.durable" ], "tags": [ "framework", "typescript", "open-source", "llms-txt", "mcp", "otel" ], "lastRelease": "2026-11-05", "graded": true, "anchor": { "graded": true, "score": 89.8, "grade": "AA", "agentReady": true, "rank": 1, "ranked": true, "rankOf": 1510, "categoryRank": 1, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 95, "maintenance": 97, "payments": 60, "reliability": 93, "schema": 100, "security": 90, "transparency": 89 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "A TypeScript agent toolkit with ToolLoopAgent, a built-in MCP client, per-tool approvals that can be HMAC-signed, opt-in OpenTelemetry and durable runs through WorkflowAgent. It ships three major versions in 14 months (5.0, 6.0, 7.0), each with a migration guide, and plain string model IDs route through Vercel's AI Gateway unless another provider is set.", "bestFor": "TypeScript teams building agents and chat UIs who want one API across many providers and a short path to MCP.", "strengths": [ "Apache 2.0, with 246 npm releases of `ai` in the 90 days to 6 October 2026", "MCP client in @ai-sdk/mcp with HTTP, SSE and stdio transports, OAuth and opt-in retries for tools/call", "Per-tool approvals, HMAC-signed approvals and Open Policy Agent rules in @ai-sdk/policy-opa", "Telemetry only after an OpenTelemetry integration is registered, with recordInputs and recordOutputs switches", "Tool search with deferred loading, so the model sees only a search tool until it needs more" ], "weaknesses": [ "TypeScript only, and `ai` 7.x needs Node 22 or newer", "Three major versions between July 2025 and June 2026, each with breaking changes", "String model IDs go to Vercel's AI Gateway by default, which needs a Vercel key", "No input or output guardrail primitive, and sandboxes and stdio MCP transport are still experimental", "1,399 open issues and pull requests on 4 October 2026, per a GitHub mirror" ], "agentNotes": [ "Pass a provider instance such as openai('model') if traffic shouldn't go through Vercel's AI Gateway", "Set toolApproval on tools that write, and experimental_toolApprovalSecret when approvals come back from a browser", "Raise or replace the default stop condition of 20 steps with stopWhen", "Close the MCP client after the run, and use HTTP transport outside local development", "Set recordInputs and recordOutputs to false when spans would carry secrets" ], "metrics": { "kind": "library", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "AA", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 89.8 } ], "editorialScores": { "ergonomics": 95, "maintenance": 97, "payments": 60, "reliability": 93, "schema": 100, "security": 90, "transparency": 86 }, "provenanceScore": 91, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm i ai # MCP: npm i @ai-sdk/mcp" }, "letme": { "capability": "https://letme.dev/agent.framework", "tool": "https://letme.dev/vercel-ai-sdk" }, "area": "frameworks", "provenance": { "legalEntity": "Vercel Inc.", "domain": "ai-sdk.dev", "domainRegistered": "2024-09-26", "endpointOnVendorDomain": null, "terms": "https://vercel.com/legal/terms", "privacy": "https://vercel.com/legal/privacy-policy", "statusPage": "https://www.vercel-status.com", "changelog": "https://github.com/vercel/ai/blob/main/packages/ai/CHANGELOG.md", "securityTxt": "valid", "checked": "2026-11-06", "notes": [ "The privacy notice (effective 1 June 2026) names Vercel Inc.", "vercel.com/.well-known/security.txt points to HackerOne and responsible.disclosure@vercel.com and expires 2027-09-28.", "RDAP gives ai-sdk.dev a registration date of 2024-09-26 and vercel.com 1999-10-04.", "The status page covers Vercel's hosted services, including the AI Gateway, not the library." ], "score": 91 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/vercel-ai-sdk.json", "live": { "slug": "vercel-ai-sdk", "vendorStatus": { "page": "https://www.vercel-status.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T19:23:51.340953129Z" }, "versions": [ { "registry": "github", "name": "vercel/ai", "version": "@ai-sdk/zai@2.0.19", "released": "2026-11-06", "seenAt": "2026-11-07T00:15:06.320451302Z" }, { "registry": "npm", "name": "@ai-sdk/mcp", "version": "2.0.92", "seenAt": "2026-11-07T00:15:02.210062748Z" }, { "registry": "npm", "name": "@ai-sdk/workflow", "version": "2.0.96", "seenAt": "2026-11-07T00:15:04.290347217Z" }, { "registry": "npm", "name": "ai", "version": "7.0.164", "seenAt": "2026-11-07T00:15:02.102209516Z" } ], "githubStars": 27784, "npmWeekly": 44868298, "securityTxt": { "url": "https://ai-sdk.dev/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T15:59:53.467050636Z" }, "llmsTxt": { "url": "https://ai-sdk.dev/llms.txt", "ok": false, "status": 0, "checkedAt": "2026-11-07T15:34:35.854467131Z" }, "pages": [ { "url": "https://raw.githubusercontent.com/vercel/ai/main/packages/ai/CHANGELOG.md", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:24:01.002799396Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "6e9ccd1db741" } ], "updatedAt": "2026-11-07T19:23:51.340953129Z" } }, "edges": [ { "by": 23, "category": "security", "leads": "vercel-ai-sdk", "name": "Security \u0026 auth", "reasons": { "a": "The CLI sends PostHog analytics, server startup sends token counts per model and a count of registered agents, tools and MCP servers, and Studio sends browser analytics, all on by default and documented, with one opt-out, MASTRA_TELEMETRY_DISABLED=1. Since #26986 (16 October 2026) each server process also reports token use per provider and model every 15 minutes, and the telemetry reference read on 6 November says server events carry a project identifier that is a raw Platform UUID or a hash of the Git origin remote, so they \"aren't anonymous\" (12). requireToolApproval on agents and MCP servers, allowedHosts for MCP HTTP, a curated environment for stdio servers, and sandboxed workspaces (20). PromptInjectionDetector, PII and moderation processors, and docs that call tool results untrusted model input (15). Built-in tracing with OpenTelemetry and other exporters (15). No SECURITY.md, no security.txt and no bug bounty found. A blog post says Mastra is SOC 2 Type II audited, which isn't scored for a framework, and we found no public advisory from Mastra about the June incident (5). Framework reading. 15+20+15+15+5 = 70 on 6 October, 12+20+15+15+5 = 67 on 6 November.", "b": "No telemetry until an OpenTelemetry integration is registered. String model IDs route to Vercel's AI Gateway by default, which is documented and needs a Vercel key, so it isn't silent (25). Per-tool approval, HMAC-signed approvals against forged client history, and Open Policy Agent rules in @ai-sdk/policy-opa, though sandboxes are experimental (20). ToolLoopAgent rejects system messages in prompts by default as an injection risk, URL fetches are checked against private addresses, and MCP HTTP transport refuses redirects by default, but there's no guardrail primitive (10). OpenTelemetry spans for every model and tool call to any backend, opt-in (15). HackerOne programme, a valid security.txt, SECURITY.md and two low-severity advisories published with fixed versions (20). Framework reading, so SOC 2 isn't scored." }, "scores": { "a": 67, "b": 90 } }, { "by": 17, "category": "transparency", "leads": "vercel-ai-sdk", "name": "Transparency \u0026 trust", "reasons": { "a": "Apache 2.0 for the core, with ee/ directories source-available under the Mastra Enterprise License (25). The privacy policy (last published 25 April 2025) covers the website, the Teams plan states six months' retention, and the subprocessor list sits in a trust centre our reader couldn't render (15). Migration guides and deprecation warnings, without dated removal windows (12). Every telemetry stream is documented with links to its source and one opt-out, and the reference now spells out what the project identifiers can be correlated with (20).", "b": "Apache 2.0 (30). The library stores nothing. The AI Gateway's ZDR page says it doesn't retain prompts or outputs and per-request ZDR is available on Pro and Enterprise, and Vercel's privacy notice is dated 1 June 2026, but we didn't read a DPA or subprocessor list (22). Deprecated APIs are removed only at majors with a migration guide, and 6.x and 5.x keep getting releases, without a written support window (14). Telemetry is opt-in and documented, with switches for inputs and outputs (20)." }, "scores": { "a": 72, "b": 89 } }, { "by": 6, "category": "reliability", "leads": "vercel-ai-sdk", "name": "Reliability", "reasons": { "a": "Official npm packages, Node 22.13 or newer (20). Public CI workflows for unit, store, workspace and e2e tests; on 6 November the newest runs on main (Version Packages, Trigger Cloud Integration Tests) succeeded, while the test workflows themselves run on pull requests (22). 436 open issues and 795 open issues and pull requests on 6 November from GitHub's API, with 2,077 issues opened in the 90 days to 3 November; all 50 newest had a comment and 24 were closed, with issue-triage automation (18). A changesets CHANGELOG per package, a CI gate that needs approval for any major bump and migration guides, but no written versioning policy found, and `.network()` is deprecated without a removal date (12). 1.82.0 (15). 20+22+18+12+15 = 87, up from 74 on 6 October, when GitHub couldn't be read.", "b": "Official npm packages, with `ai` 7.x requiring Node 22 or newer (20). A public CI workflow with lint, type checks, unit tests, Node-version tests, MCP tests on Windows and e2e tests runs on every push to main, and the newest completed CI runs on main passed on 6 November (25). 1,517 open issues and pull requests on 6 November from GitHub's API, with 1,059 issues opened in the 90 days to 3 November; 47 of the 50 newest had a comment and 32 were closed (18). A written versioning page with breaking changes only in majors, experimental_ prefixes for unstable APIs and a migration guide per major (15). 7.0.163 (15). 20+25+18+15+15 = 93, up from 73 on 6 October, when GitHub couldn't be read." }, "scores": { "a": 87, "b": 93 } } ], "facts": [ { "a": "Agent framework", "b": "Agent framework", "name": "Kind" }, { "a": "Kepler Software, Inc.", "b": "Vercel Inc.", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "", "b": "", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Free", "b": "Free", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Apache-2.0 for the core. Code under ee/ directories is source-available under the Mastra Enterprise License, free for development and testing", "b": "Apache-2.0", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-11-04", "b": "2026-11-05", "name": "Last release" }, { "a": "2026-10-26", "b": "2026-06-01", "name": "Terms last updated" }, { "a": "no date given", "b": "2026-06-01", "name": "Privacy policy last updated" }, { "a": "yes", "b": "yes, with an opt-out", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "29k stars, 3.1M npm/wk", "b": "28k stars, 44.9M npm/wk", "name": "Popularity" } ], "faq": [ { "answer": "AI SDK scores 89.8 (AA) on agent readiness against Mastra's 74.2 (BB), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Mastra or AI SDK?" }, { "answer": "Yes. Mastra is open source (Apache-2.0 for the core. Code under ee/ directories is source-available under the Mastra Enterprise License, free for development and testing). AI SDK is open source (Apache-2.0).", "question": "Are Mastra and AI SDK open source?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "TypeScript teams that want agents, workflows, memory, evals and a local Studio in one framework.", "slug": "mastra", "watchFor": "Malicious versions of Mastra npm packages, including @mastra/core 1.42.1, were published on 17 June 2026" }, { "aheadOn": [ "Reliability, 93 against 87", "Security \u0026 auth, 90 against 67", "Transparency \u0026 trust, 89 against 72" ], "also": [ "No incidents deducted, where Mastra loses 8 points for them" ], "goodFor": "TypeScript teams building agents and chat UIs who want one API across many providers and a short path to MCP.", "slug": "vercel-ai-sdk", "watchFor": "TypeScript only, and `ai` 7.x needs Node 22 or newer" } ], "history": null, "job": { "capability": "agent.framework", "name": "Agent frameworks" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agentos-vs-mastra.json", "title": "AgentOS vs Mastra", "url": "https://www.anchorterminal.com/compare/agentos-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/agentos-vs-vercel-ai-sdk.json", "title": "AgentOS vs AI SDK", "url": "https://www.anchorterminal.com/compare/agentos-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/agno-vs-mastra.json", "title": "Agno vs Mastra", "url": "https://www.anchorterminal.com/compare/agno-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/agno-vs-vercel-ai-sdk.json", "title": "Agno vs AI SDK", "url": "https://www.anchorterminal.com/compare/agno-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/boxlang-ai-vs-mastra.json", "title": "BoxLang AI vs Mastra", "url": "https://www.anchorterminal.com/compare/boxlang-ai-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/boxlang-ai-vs-vercel-ai-sdk.json", "title": "BoxLang AI vs AI SDK", "url": "https://www.anchorterminal.com/compare/boxlang-ai-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-mastra.json", "title": "Claude Agent SDK vs Mastra", "url": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-vercel-ai-sdk.json", "title": "Claude Agent SDK vs AI SDK", "url": "https://www.anchorterminal.com/compare/claude-agent-sdk-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/crewai-vs-mastra.json", "title": "CrewAI vs Mastra", "url": "https://www.anchorterminal.com/compare/crewai-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/crewai-vs-vercel-ai-sdk.json", "title": "CrewAI vs AI SDK", "url": "https://www.anchorterminal.com/compare/crewai-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-mastra.json", "title": "Cursor Agent SDK vs Mastra", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-vercel-ai-sdk.json", "title": "Cursor Agent SDK vs AI SDK", "url": "https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/docker-agent-vs-mastra.json", "title": "Docker Agent vs Mastra", "url": "https://www.anchorterminal.com/compare/docker-agent-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/docker-agent-vs-vercel-ai-sdk.json", "title": "Docker Agent vs AI SDK", "url": "https://www.anchorterminal.com/compare/docker-agent-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-mastra.json", "title": "Agent Development Kit (ADK) vs Mastra", "url": "https://www.anchorterminal.com/compare/google-adk-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/google-adk-vs-vercel-ai-sdk.json", "title": "Agent Development Kit (ADK) vs AI SDK", "url": "https://www.anchorterminal.com/compare/google-adk-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/guilds-run-vs-mastra.json", "title": "guilds.run vs Mastra", "url": "https://www.anchorterminal.com/compare/guilds-run-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/guilds-run-vs-vercel-ai-sdk.json", "title": "guilds.run vs AI SDK", "url": "https://www.anchorterminal.com/compare/guilds-run-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/langgraph-vs-mastra.json", "title": "LangGraph vs Mastra", "url": "https://www.anchorterminal.com/compare/langgraph-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/langgraph-vs-vercel-ai-sdk.json", "title": "LangGraph vs AI SDK", "url": "https://www.anchorterminal.com/compare/langgraph-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/llamaindex-vs-mastra.json", "title": "LlamaIndex Framework vs Mastra", "url": "https://www.anchorterminal.com/compare/llamaindex-vs-mastra" }, { "json": "https://www.anchorterminal.com/compare/llamaindex-vs-vercel-ai-sdk.json", "title": "LlamaIndex Framework vs AI SDK", "url": "https://www.anchorterminal.com/compare/llamaindex-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/mastra-vs-microsoft-agent-framework.json", "title": "Mastra vs Microsoft Agent Framework", "url": "https://www.anchorterminal.com/compare/mastra-vs-microsoft-agent-framework" }, { "json": "https://www.anchorterminal.com/compare/mastra-vs-openai-agents-sdk.json", "title": "Mastra vs OpenAI Agents SDK", "url": "https://www.anchorterminal.com/compare/mastra-vs-openai-agents-sdk" }, { "json": "https://www.anchorterminal.com/compare/mastra-vs-pydantic-ai.json", "title": "Mastra vs Pydantic AI", "url": "https://www.anchorterminal.com/compare/mastra-vs-pydantic-ai" }, { "json": "https://www.anchorterminal.com/compare/mastra-vs-smolagents.json", "title": "Mastra vs smolagents", "url": "https://www.anchorterminal.com/compare/mastra-vs-smolagents" }, { "json": "https://www.anchorterminal.com/compare/mastra-vs-strands-agents.json", "title": "Mastra vs Strands Agents", "url": "https://www.anchorterminal.com/compare/mastra-vs-strands-agents" }, { "json": "https://www.anchorterminal.com/compare/mastra-vs-tradingagents.json", "title": "Mastra vs TradingAgents", "url": "https://www.anchorterminal.com/compare/mastra-vs-tradingagents" }, { "json": "https://www.anchorterminal.com/compare/microsoft-agent-framework-vs-vercel-ai-sdk.json", "title": "Microsoft Agent Framework vs AI SDK", "url": "https://www.anchorterminal.com/compare/microsoft-agent-framework-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/openai-agents-sdk-vs-vercel-ai-sdk.json", "title": "OpenAI Agents SDK vs AI SDK", "url": "https://www.anchorterminal.com/compare/openai-agents-sdk-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/pydantic-ai-vs-vercel-ai-sdk.json", "title": "Pydantic AI vs AI SDK", "url": "https://www.anchorterminal.com/compare/pydantic-ai-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/smolagents-vs-vercel-ai-sdk.json", "title": "smolagents vs AI SDK", "url": "https://www.anchorterminal.com/compare/smolagents-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/strands-agents-vs-vercel-ai-sdk.json", "title": "Strands Agents vs AI SDK", "url": "https://www.anchorterminal.com/compare/strands-agents-vs-vercel-ai-sdk" }, { "json": "https://www.anchorterminal.com/compare/tradingagents-vs-vercel-ai-sdk.json", "title": "TradingAgents vs AI SDK", "url": "https://www.anchorterminal.com/compare/tradingagents-vs-vercel-ai-sdk" } ], "panel": null, "scores": [ { "by": 6, "edge": "vercel-ai-sdk", "key": "reliability", "mastra": 87, "name": "Reliability", "vercel-ai-sdk": 93, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 2, "edge": "vercel-ai-sdk", "key": "schema", "mastra": 98, "name": "Schema \u0026 documentation", "vercel-ai-sdk": 100, "weight": 13 }, { "by": 3, "edge": "vercel-ai-sdk", "key": "ergonomics", "mastra": 92, "name": "Agent ergonomics", "vercel-ai-sdk": 95, "weight": 13 }, { "by": 23, "edge": "vercel-ai-sdk", "key": "security", "mastra": 67, "name": "Security \u0026 auth", "vercel-ai-sdk": 90, "weight": 14 }, { "by": 0, "edge": "", "key": "payments", "mastra": 60, "name": "Payments \u0026 pricing", "vercel-ai-sdk": 60, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 1, "edge": "vercel-ai-sdk", "key": "maintenance", "mastra": 96, "name": "Maintenance \u0026 community", "vercel-ai-sdk": 97, "weight": 7 }, { "by": 17, "edge": "vercel-ai-sdk", "key": "transparency", "mastra": 72, "name": "Transparency \u0026 trust", "vercel-ai-sdk": 89, "weight": 7 } ], "summary": "AI SDK scores 89.8 (AA) on agent readiness against Mastra's 74.2 (BB), and leads in 6 of 7 scored categories. Both do agent frameworks.", "tasks": null, "tutorials": [], "verdicts": { "mastra": "A TypeScript framework with agents, workflows with suspend and resume, memory, an MCP client and server, per-server tool approval and built-in guardrail processors including a prompt-injection detector. On 17 June 2026 malicious versions of its npm packages were published, and the CLI, server and Studio send usage analytics by default, with token counts every 15 minutes.", "vercel-ai-sdk": "A TypeScript agent toolkit with ToolLoopAgent, a built-in MCP client, per-tool approvals that can be HMAC-signed, opt-in OpenTelemetry and durable runs through WorkflowAgent. It ships three major versions in 14 months (5.0, 6.0, 7.0), each with a migration guide, and plain string model IDs route through Vercel's AI Gateway unless another provider is set." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/mastra-vs-vercel-ai-sdk", "json": "https://www.anchorterminal.com/compare/mastra-vs-vercel-ai-sdk.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/mastra-vs-vercel-ai-sdk.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/mastra-vs-vercel-ai-sdk.min.md" }, "markdown": "AI SDK scores 89.8 (AA) on agent readiness against Mastra's 74.2 (BB), and leads in 6 of 7 scored categories. Both do agent frameworks.\n\n- Mastra: grade BB, 74.2/100, rank #91 of 1510. Markdown https://www.anchorterminal.com/tools/mastra.md · JSON https://www.anchorterminal.com/api/v1/tools/mastra.json\n- AI SDK: grade AA, 89.8/100, rank #1 of 1510. Markdown https://www.anchorterminal.com/tools/vercel-ai-sdk.md · JSON https://www.anchorterminal.com/api/v1/tools/vercel-ai-sdk.json\n- Best agent frameworks and SDKs: https://www.anchorterminal.com/best/frameworks/index.md\n- All 171 frameworks comparisons: https://www.anchorterminal.com/compare/frameworks/index.md\n\n## Which one, for what\n\n### Mastra (BB)\n\nGood for: TypeScript teams that want agents, workflows, memory, evals and a local Studio in one framework.\n\nWatch for: Malicious versions of Mastra npm packages, including @mastra/core 1.42.1, were published on 17 June 2026\n\n### AI SDK (AA)\n\nGood for: TypeScript teams building agents and chat UIs who want one API across many providers and a short path to MCP.\n\nAhead on:\n- Reliability, 93 against 87\n- Security \u0026 auth, 90 against 67\n- Transparency \u0026 trust, 89 against 72\n\nAlso in its favour:\n- No incidents deducted, where Mastra loses 8 points for them\n\nWatch for: TypeScript only, and `ai` 7.x needs Node 22 or newer\n\n\n## Why the edge\n\n### Security \u0026 auth: AI SDK +23\n\n- Mastra (67): The CLI sends PostHog analytics, server startup sends token counts per model and a count of registered agents, tools and MCP servers, and Studio sends browser analytics, all on by default and documented, with one opt-out, MASTRA_TELEMETRY_DISABLED=1. Since #26986 (16 October 2026) each server process also reports token use per provider and model every 15 minutes, and the telemetry reference read on 6 November says server events carry a project identifier that is a raw Platform UUID or a hash of the Git origin remote, so they \"aren't anonymous\" (12). requireToolApproval on agents and MCP servers, allowedHosts for MCP HTTP, a curated environment for stdio servers, and sandboxed workspaces (20). PromptInjectionDetector, PII and moderation processors, and docs that call tool results untrusted model input (15). Built-in tracing with OpenTelemetry and other exporters (15). No SECURITY.md, no security.txt and no bug bounty found. A blog post says Mastra is SOC 2 Type II audited, which isn't scored for a framework, and we found no public advisory from Mastra about the June incident (5). Framework reading. 15+20+15+15+5 = 70 on 6 October, 12+20+15+15+5 = 67 on 6 November.\n- AI SDK (90): No telemetry until an OpenTelemetry integration is registered. String model IDs route to Vercel's AI Gateway by default, which is documented and needs a Vercel key, so it isn't silent (25). Per-tool approval, HMAC-signed approvals against forged client history, and Open Policy Agent rules in @ai-sdk/policy-opa, though sandboxes are experimental (20). ToolLoopAgent rejects system messages in prompts by default as an injection risk, URL fetches are checked against private addresses, and MCP HTTP transport refuses redirects by default, but there's no guardrail primitive (10). OpenTelemetry spans for every model and tool call to any backend, opt-in (15). HackerOne programme, a valid security.txt, SECURITY.md and two low-severity advisories published with fixed versions (20). Framework reading, so SOC 2 isn't scored.\n\n### Transparency \u0026 trust: AI SDK +17\n\n- Mastra (72): Apache 2.0 for the core, with ee/ directories source-available under the Mastra Enterprise License (25). The privacy policy (last published 25 April 2025) covers the website, the Teams plan states six months' retention, and the subprocessor list sits in a trust centre our reader couldn't render (15). Migration guides and deprecation warnings, without dated removal windows (12). Every telemetry stream is documented with links to its source and one opt-out, and the reference now spells out what the project identifiers can be correlated with (20).\n- AI SDK (89): Apache 2.0 (30). The library stores nothing. The AI Gateway's ZDR page says it doesn't retain prompts or outputs and per-request ZDR is available on Pro and Enterprise, and Vercel's privacy notice is dated 1 June 2026, but we didn't read a DPA or subprocessor list (22). Deprecated APIs are removed only at majors with a migration guide, and 6.x and 5.x keep getting releases, without a written support window (14). Telemetry is opt-in and documented, with switches for inputs and outputs (20).\n\n### Reliability: AI SDK +6\n\n- Mastra (87): Official npm packages, Node 22.13 or newer (20). Public CI workflows for unit, store, workspace and e2e tests; on 6 November the newest runs on main (Version Packages, Trigger Cloud Integration Tests) succeeded, while the test workflows themselves run on pull requests (22). 436 open issues and 795 open issues and pull requests on 6 November from GitHub's API, with 2,077 issues opened in the 90 days to 3 November; all 50 newest had a comment and 24 were closed, with issue-triage automation (18). A changesets CHANGELOG per package, a CI gate that needs approval for any major bump and migration guides, but no written versioning policy found, and `.network()` is deprecated without a removal date (12). 1.82.0 (15). 20+22+18+12+15 = 87, up from 74 on 6 October, when GitHub couldn't be read.\n- AI SDK (93): Official npm packages, with `ai` 7.x requiring Node 22 or newer (20). A public CI workflow with lint, type checks, unit tests, Node-version tests, MCP tests on Windows and e2e tests runs on every push to main, and the newest completed CI runs on main passed on 6 November (25). 1,517 open issues and pull requests on 6 November from GitHub's API, with 1,059 issues opened in the 90 days to 3 November; 47 of the 50 newest had a comment and 32 were closed (18). A written versioning page with breaking changes only in majors, experimental_ prefixes for unstable APIs and a migration guide per major (15). 7.0.163 (15). 20+25+18+15+15 = 93, up from 73 on 6 October, when GitHub couldn't be read.\n\n## Score by category\n\n| Category | Weight | Mastra | AI SDK | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 87 | 93 | AI SDK +6 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 98 | 100 | AI SDK +2 |\n| Agent ergonomics | 13% (16.2 this run) | 92 | 95 | AI SDK +3 |\n| Security \u0026 auth | 14% (17.5 this run) | 67 | 90 | AI SDK +23 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 60 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 96 | 97 | AI SDK +1 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 72 | 89 | AI SDK +17 |\n| Negative events | ≤15 | -8 | 0 | |\n| **Total** | | **74.2 · BB** | **89.8 · AA** | |\n\n## Facts side by side\n\n| Fact | Mastra | AI SDK |\n| --- | --- | --- |\n| Kind | Agent framework | Agent framework |\n| Vendor | Kepler Software, Inc. | Vercel Inc. |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports | | |\n| Auth | API key | API key |\n| Pricing | Free | Free |\n| x402 | no | no |\n| Licence | Apache-2.0 for the core. Code under ee/ directories is source-available under the Mastra Enterprise License, free for development and testing | Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-11-04 | 2026-11-05 |\n| Terms last updated | 2026-10-26 | 2026-06-01 |\n| Privacy policy last updated | no date given | 2026-06-01 |\n| Customer content may train models | yes | yes, with an opt-out |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 29k stars, 3.1M npm/wk | 28k stars, 44.9M npm/wk |\n\n## Verdicts\n\n**Mastra.** A TypeScript framework with agents, workflows with suspend and resume, memory, an MCP client and server, per-server tool approval and built-in guardrail processors including a prompt-injection detector. On 17 June 2026 malicious versions of its npm packages were published, and the CLI, server and Studio send usage analytics by default, with token counts every 15 minutes.\n\n**AI SDK.** A TypeScript agent toolkit with ToolLoopAgent, a built-in MCP client, per-tool approvals that can be HMAC-signed, opt-in OpenTelemetry and durable runs through WorkflowAgent. It ships three major versions in 14 months (5.0, 6.0, 7.0), each with a migration guide, and plain string model IDs route through Vercel's AI Gateway unless another provider is set.\n\n## Before you call either\n\n### Mastra\n\n1. Set MASTRA_TELEMETRY_DISABLED=1 in every environment that runs the CLI, the server or Studio\n2. Pin exact versions with a lockfile, and make sure no 17 June 2026 release such as @mastra/core 1.42.1 is installed\n3. Set requireToolApproval on MCP servers that write, and allowedHosts when server URLs come from configuration\n4. Add PromptInjectionDetector as an input processor when tools return web or user content\n5. Use supervisor agents through generate() or stream(). `.network()` is deprecated\n\n### AI SDK\n\n1. Pass a provider instance such as openai('model') if traffic shouldn't go through Vercel's AI Gateway\n2. Set toolApproval on tools that write, and experimental_toolApprovalSecret when approvals come back from a browser\n3. Raise or replace the default stop condition of 20 steps with stopWhen\n4. Close the MCP client after the run, and use HTTP transport outside local development\n5. Set recordInputs and recordOutputs to false when spans would carry secrets\n\n## Questions\n\n### Which is better for AI agents, Mastra or AI SDK?\n\nAI SDK scores 89.8 (AA) on agent readiness against Mastra's 74.2 (BB), and leads in 6 of 7 scored categories.\n\n### Are Mastra and AI SDK open source?\n\nYes. Mastra is open source (Apache-2.0 for the core. Code under ee/ directories is source-available under the Mastra Enterprise License, free for development and testing). AI SDK is open source (Apache-2.0).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/mastra-vs-vercel-ai-sdk.json, and with the fewest tokens: https://www.anchorterminal.com/compare/mastra-vs-vercel-ai-sdk.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"mastra\", \"b\": \"vercel-ai-sdk\"}`. From a terminal: `anchor compare mastra vercel-ai-sdk`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/mastra.json and https://www.anchorterminal.com/api/v1/tools/vercel-ai-sdk.json\n\n## Other comparisons with Mastra or AI SDK\n\n- [AgentOS vs Mastra](https://www.anchorterminal.com/compare/agentos-vs-mastra.md)\n- [AgentOS vs AI SDK](https://www.anchorterminal.com/compare/agentos-vs-vercel-ai-sdk.md)\n- [Agno vs Mastra](https://www.anchorterminal.com/compare/agno-vs-mastra.md)\n- [Agno vs AI SDK](https://www.anchorterminal.com/compare/agno-vs-vercel-ai-sdk.md)\n- [BoxLang AI vs Mastra](https://www.anchorterminal.com/compare/boxlang-ai-vs-mastra.md)\n- [BoxLang AI vs AI SDK](https://www.anchorterminal.com/compare/boxlang-ai-vs-vercel-ai-sdk.md)\n- [Claude Agent SDK vs Mastra](https://www.anchorterminal.com/compare/claude-agent-sdk-vs-mastra.md)\n- [Claude Agent SDK vs AI SDK](https://www.anchorterminal.com/compare/claude-agent-sdk-vs-vercel-ai-sdk.md)\n- [CrewAI vs Mastra](https://www.anchorterminal.com/compare/crewai-vs-mastra.md)\n- [CrewAI vs AI SDK](https://www.anchorterminal.com/compare/crewai-vs-vercel-ai-sdk.md)\n- [Cursor Agent SDK vs Mastra](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-mastra.md)\n- [Cursor Agent SDK vs AI SDK](https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-vercel-ai-sdk.md)\n- [Docker Agent vs Mastra](https://www.anchorterminal.com/compare/docker-agent-vs-mastra.md)\n- [Docker Agent vs AI SDK](https://www.anchorterminal.com/compare/docker-agent-vs-vercel-ai-sdk.md)\n- [Agent Development Kit (ADK) vs Mastra](https://www.anchorterminal.com/compare/google-adk-vs-mastra.md)\n- [Agent Development Kit (ADK) vs AI SDK](https://www.anchorterminal.com/compare/google-adk-vs-vercel-ai-sdk.md)\n- [guilds.run vs Mastra](https://www.anchorterminal.com/compare/guilds-run-vs-mastra.md)\n- [guilds.run vs AI SDK](https://www.anchorterminal.com/compare/guilds-run-vs-vercel-ai-sdk.md)\n- [LangGraph vs Mastra](https://www.anchorterminal.com/compare/langgraph-vs-mastra.md)\n- [LangGraph vs AI SDK](https://www.anchorterminal.com/compare/langgraph-vs-vercel-ai-sdk.md)\n- [LlamaIndex Framework vs Mastra](https://www.anchorterminal.com/compare/llamaindex-vs-mastra.md)\n- [LlamaIndex Framework vs AI SDK](https://www.anchorterminal.com/compare/llamaindex-vs-vercel-ai-sdk.md)\n- [Mastra vs Microsoft Agent Framework](https://www.anchorterminal.com/compare/mastra-vs-microsoft-agent-framework.md)\n- [Mastra vs OpenAI Agents SDK](https://www.anchorterminal.com/compare/mastra-vs-openai-agents-sdk.md)\n- [Mastra vs Pydantic AI](https://www.anchorterminal.com/compare/mastra-vs-pydantic-ai.md)\n- [Mastra vs smolagents](https://www.anchorterminal.com/compare/mastra-vs-smolagents.md)\n- [Mastra vs Strands Agents](https://www.anchorterminal.com/compare/mastra-vs-strands-agents.md)\n- [Mastra vs TradingAgents](https://www.anchorterminal.com/compare/mastra-vs-tradingagents.md)\n- [Microsoft Agent Framework vs AI SDK](https://www.anchorterminal.com/compare/microsoft-agent-framework-vs-vercel-ai-sdk.md)\n- [OpenAI Agents SDK vs AI SDK](https://www.anchorterminal.com/compare/openai-agents-sdk-vs-vercel-ai-sdk.md)\n- [Pydantic AI vs AI SDK](https://www.anchorterminal.com/compare/pydantic-ai-vs-vercel-ai-sdk.md)\n- [smolagents vs AI SDK](https://www.anchorterminal.com/compare/smolagents-vs-vercel-ai-sdk.md)\n- [Strands Agents vs AI SDK](https://www.anchorterminal.com/compare/strands-agents-vs-vercel-ai-sdk.md)\n- [TradingAgents vs AI SDK](https://www.anchorterminal.com/compare/tradingagents-vs-vercel-ai-sdk.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Mastra vs AI SDK", "url": "" } ], "description": "AI SDK scores 89.8 (AA) to Mastra's 74.2 (BB) for agent frameworks. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Mastra BB 74.2", "AI SDK AA 89.8", "scores" ], "h1": "Mastra vs AI SDK", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/mastra-vs-vercel-ai-sdk", "published": "2026-10-01", "section": "tools", "title": "Mastra vs AI SDK for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/mastra-vs-vercel-ai-sdk" }, "tokens": { "markdown": 3700, "slim": 1730 }, "version": 1 }