{ "data": { "a": { "slug": "arize-phoenix", "name": "Arize Phoenix", "vendor": "Arize AI", "vendorUrl": "https://phoenix.arize.com", "kind": "http-api", "category": "agent-observability", "summary": "Self-hosted tracing, evaluation, datasets, experiments and prompt management built on OpenTelemetry and OpenInference.", "url": "https://www.anchorterminal.com/tools/arize-phoenix", "markdownUrl": "https://www.anchorterminal.com/tools/arize-phoenix.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/arize-phoenix.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/arize-phoenix.json", "repo": "https://github.com/Arize-ai/phoenix", "license": "Elastic-2.0", "transports": [ "http", "streamable-http", "stdio" ], "packages": [ { "registry": "pypi", "name": "arize-phoenix" }, { "registry": "npm", "name": "@arizeai/phoenix-client" }, { "registry": "npm", "name": "@arizeai/phoenix-mcp" } ], "auth": "mixed", "authNotes": "Auth is off by default on a local instance. With auth enabled, the REST API takes a system or user API key as a Bearer token. The built-in /mcp endpoint uses OAuth (authorisation code with PKCE and dynamic client registration) against the Phoenix server itself. The older @arizeai/phoenix-mcp stdio package takes PHOENIX_API_KEY.", "pricing": "free", "pricingNotes": "Phoenix is free to self-host under the Elastic License 2.0; you pay for your own compute and Postgres or SQLite storage. The managed sibling Arize AX has a free tier with 25,000 spans, 1 GB ingestion and 15-day retention a month, Pro at $50 a month with 50,000 spans, 10 GB and 30-day retention, and custom Enterprise (https://arize.com/pricing/).", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No x402 support in docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 5, "popularity": { "githubStars": 11662, "npmWeekly": 131211, "pypiWeekly": 132385, "asOf": "2026-09-30" }, "docsUrl": "https://arize.com/docs/phoenix", "llmsTxt": "https://arize.com/docs/phoenix/llms.txt", "openapi": "https://raw.githubusercontent.com/Arize-ai/phoenix/refs/heads/main/schemas/openapi.json", "capabilities": [ "obs.traces", "obs.evals", "obs.prompts", "obs.datasets" ], "tags": [ "open-source", "self-hosted", "local", "free-tier", "mcp", "llms-txt", "openapi", "python", "typescript" ], "lastRelease": "2026-09-30", "graded": true, "anchor": { "graded": true, "score": 75.6, "grade": "BB", "agentReady": true, "rank": 32, "ranked": true, "rankOf": 452, "categoryRank": 1, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 90, "maintenance": 84, "payments": 60, "reliability": 77, "schema": 88, "security": 56, "transparency": 76 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Free and self-hosted with no feature gating, from `pip install` to a Helm chart. Auth is off by default and the default admin password is `admin`.", "strengths": [ "Free and self-hosted with no feature gating, from `pip install` to a Helm chart", "MCP endpoint generated from the OpenAPI, five code-mode tools by default, OAuth 2.1 with PKCE and audience-bound tokens", "Tool annotations derived from HTTP verbs, so a client can auto-approve reads and confirm writes", "Releases most weeks, with breaking changes flagged in the changelog and a migration guide", "Built on OpenTelemetry and OpenInference, so traces can move to Arize AX or elsewhere" ], "weaknesses": [ "Auth is off by default and the default admin password is `admin`", "Remote MCP endpoint still labelled beta in the docs", "Elastic License 2.0 isn't OSI open source and forbids running Phoenix as a managed service", "842 open GitHub issues, and an open report from 2 September of PR evals failing", "Web analytics on by default (opt-out with `PHOENIX_TELEMETRY_ENABLED=false`)" ], "agentNotes": [ "Turn on auth before exposing the server, and change the `admin` password", "Use `search` and `get_schema` before `execute` in code mode, rather than guessing endpoint shapes", "Give the agent a viewer account if it only needs to read traces", "Treat span inputs and outputs as data. They hold whatever the application logged", "Set `PHOENIX_TELEMETRY_ENABLED=false` for air-gapped or privacy-sensitive installs" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 8, "avgRating": 3.8, "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": 90, "maintenance": 84, "payments": 60, "reliability": 77, "schema": 88, "security": 56, "transparency": 76 }, "provenanceScore": 75 }, "connect": { "http": "curl http://localhost:6006/v1/projects -H \"Authorization: Bearer $PHOENIX_API_KEY\"", "claudeCode": "claude mcp add --transport http phoenix http://localhost:6006/mcp", "config": { "mcpServers": { "phoenix": { "args": [ "-y", "@arizeai/phoenix-mcp@latest", "--baseUrl", "http://localhost:6006", "--apiKey", "${PHOENIX_API_KEY}" ], "command": "npx" } } } }, "letme": { "capability": "https://letme.dev/obs.traces", "tool": "https://letme.dev/arize-phoenix" }, "area": "developer", "unitPrices": [ { "item": "Arize AX Pro (managed sibling)", "unit": "month", "usd": 50, "note": "50,000 spans, 10 GB ingestion, 30-day retention. Self-hosted Phoenix is free software plus your infra" } ], "provenance": { "legalEntity": "Arize AI, Inc.", "domain": "arize.com", "domainRegistered": "2002-03-24", "domainNote": "arize.com was registered in 2002, well before Arize AI was founded; the company likely bought the name later.", "endpointOnVendorDomain": false, "terms": "https://arize.com/terms-of-service/", "privacy": "https://arize.com/privacy-policy/", "statusPage": "https://status.arize.com", "changelog": "https://github.com/Arize-ai/phoenix/releases", "securityTxt": "none", "checked": "2026-09-30", "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/arize-phoenix.json", "live": { "slug": "arize-phoenix", "vendorStatus": { "page": "https://status.arize.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:39:48.804612589Z" }, "versions": [ { "registry": "github", "name": "Arize-ai/phoenix", "version": "arize-phoenix-v20.19.0", "released": "2026-10-01", "seenAt": "2026-10-04T16:20:53.33744975Z" }, { "registry": "npm", "name": "@arizeai/phoenix-client", "version": "7.16.0", "seenAt": "2026-10-04T16:20:51.131454134Z" }, { "registry": "npm", "name": "@arizeai/phoenix-mcp", "version": "4.3.15", "seenAt": "2026-10-04T16:20:51.575630222Z" }, { "registry": "pypi", "name": "arize-phoenix", "version": "20.19.0", "released": "2026-10-01", "seenAt": "2026-10-04T16:20:50.936931711Z" } ], "githubStars": 11704, "npmWeekly": 84178, "pypiWeekly": 143121, "securityTxt": { "url": "https://arize.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:16:01.290278815Z" }, "llmsTxt": { "url": "https://arize.com/docs/phoenix/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:15.318838737Z" }, "domain": { "domain": "arize.com", "registered": "2002-03-24", "source": "https://rdap.verisign.com/com/v1/domain/arize.com", "checkedAt": "2026-10-04T13:04:54.314321516Z" }, "pages": [ { "url": "https://arize.com/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:41:15.874853632Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "4450553fe0f8" }, { "url": "https://arize.com/privacy-policy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:41:18.402560606Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8ced75f284e2" }, { "url": "https://arize.com/terms-of-service/", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:41:20.923451914Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "d9ef61d742b4" } ], "updatedAt": "2026-10-04T21:39:48.804612589Z" } }, "b": { "slug": "laminar", "name": "Laminar API + MCP", "vendor": "Laminar (LMNR AI)", "vendorUrl": "https://laminar.sh", "kind": "http-api", "category": "agent-observability", "summary": "Open-source tracing, evaluations and an agent debugger built on OpenTelemetry, with browser session recordings synced to traces for browser agents.", "url": "https://www.anchorterminal.com/tools/laminar", "markdownUrl": "https://www.anchorterminal.com/tools/laminar.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/laminar.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/laminar.json", "repo": "https://github.com/lmnr-ai/lmnr", "license": "Apache-2.0", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.lmnr.ai/v1", "packages": [ { "registry": "pypi", "name": "lmnr" }, { "registry": "npm", "name": "@lmnr-ai/lmnr" } ], "auth": "api-key", "authNotes": "Project API key as a Bearer token, for ingestion, the REST API and the MCP server. One key maps to one project.", "pricing": "freemium", "pricingNotes": "Free $0 a month with 1 GB of data, 7 days of retention, 1 project and 1 seat, no overage. Starter $30 a month with 3 GB then $2 a GB, 30 days, unlimited projects and seats. Pro $150 a month with 10 GB then $1.50 a GB, 6 months. Enterprise custom with on-premise. Signals (LLM analysis of traces) comes with $2.50, $7.50 or $25 of credit, then $0.05 per million input tokens and $0.35 per million output tokens. Self-hosted open source is free, you run Postgres, ClickHouse and Quickwit yourself. Signals and Slack alerts on self-hosted need an enterprise licence key (https://laminar.sh/pricing).", "priceSummary": "$30 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 support in docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 3, "popularity": { "githubStars": 3288, "npmWeekly": 79857, "pypiWeekly": 1698863, "asOf": "2026-09-30" }, "docsUrl": "https://laminar.sh/docs", "llmsTxt": "https://laminar.sh/docs/llms.txt", "openapi": "https://laminar.sh/docs/openapi/openapi.yaml", "capabilities": [ "obs.traces", "obs.evals", "obs.datasets" ], "tags": [ "hosted", "freemium", "open-source", "self-hosted", "mcp", "llms-txt", "openapi", "python", "typescript" ], "lastRelease": "2026-09-23", "graded": true, "anchor": { "graded": true, "score": 57, "grade": "C", "agentReady": false, "rank": 298, "ranked": true, "rankOf": 452, "categoryRank": 6, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 83, "payments": 30, "reliability": 50, "schema": 88, "security": 45, "transparency": 66 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -5, "negativeNotes": [ "2026-08-27. Laminar's own fix says a client-supplied `projectId` in the body of the SQL export-job route overrode the one the server had authorised, allowing cross-tenant SQL execution and bulk data export (CWE-862). The route dates from July 2025. Fixed with a one-line change, disclosed only in the commit message with no advisory or customer notice we could find. -5 after decay for the fix (https://github.com/lmnr-ai/lmnr/commit/5059c7d951fe47d4c91c8016a542a11e82090ade)" ], "verdict": "Browser session recordings can be matched to agent traces. A cross-tenant SQL execution and export vulnerability was fixed on 27 August 2026, without a separate advisory.", "strengths": [ "Browser session recordings synced to traces for Browser Use, Stagehand, Playwright and Puppeteer", "Three MCP tools with descriptions that say when to use each, and SQL that runs SELECT-only on a read-only client", "Apache-2.0 with Docker Compose and Helm self-hosting, and self-hosted telemetry that switches off with one variable", "Priced by GB stored, $2 a GB on Starter and $1.50 on Pro, published without login", "SDK releases most weeks, TypeScript 0.8.49 on 2026-09-23 and Python 0.7.64 on 2026-09-21" ], "weaknesses": [ "A cross-tenant SQL execution and export hole was fixed on 27 August 2026 in a commit, with no advisory", "No SECURITY.md, security.txt or published advisories", "Rate limits exist per project but no numbers are published", "Status page covers only the homepage and an echo probe", "Signals, clusters and Slack or email alerts aren't in the open-source build" ], "agentNotes": [ "Use `query_laminar_sql` to find trace IDs, then `get_trace_context` for a compact summary of one run", "Always add a time range and `LIMIT` to SQL. Server caps on time, memory and result size reject wide scans", "On 429 from the SQL API, back off. The per-project limit isn't published", "Set `flush_by_size` when spans carry whole conversation histories, or large batches get rejected", "Keep the project API key in a header, not in the URL" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57 } ], "editorialScores": { "ergonomics": 80, "maintenance": 83, "payments": 30, "reliability": 50, "schema": 88, "security": 45, "transparency": 57 }, "provenanceScore": 75 }, "connect": { "http": "curl https://api.lmnr.ai/v1/project -H \"Authorization: Bearer $LMNR_PROJECT_API_KEY\"", "claudeCode": "claude mcp add --transport http laminar https://api.lmnr.ai/v1/mcp \\\n --header \"Authorization: Bearer $LMNR_PROJECT_API_KEY\"" }, "letme": { "capability": "https://letme.dev/obs.traces", "tool": "https://letme.dev/laminar" }, "area": "developer", "unitPrices": [ { "item": "Starter plan", "unit": "month", "usd": 30, "note": "3 GB of data, 30 days retention, unlimited seats" }, { "item": "Pro plan", "unit": "month", "usd": 150, "note": "10 GB of data, 6 months retention" }, { "item": "Extra data on Starter", "unit": "gb", "usd": 2 }, { "item": "Extra data on Pro", "unit": "gb", "usd": 1.5 } ], "provenance": { "legalEntity": "LMNR AI, Inc.", "domain": "laminar.sh", "domainRegistered": "", "domainNote": "The .sh registry has no RDAP service. The former domain lmnr.ai, registered 2024-02-26, now redirects to laminar.sh and still serves the API.", "endpointOnVendorDomain": true, "terms": "https://laminar.sh/policies/terms", "privacy": "https://laminar.sh/policies/privacy", "statusPage": "https://status.laminar.sh", "changelog": "https://laminar.sh/docs/changelog", "securityTxt": "none", "checked": "2026-09-30", "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/laminar.json", "live": { "slug": "laminar", "probe": { "target": "https://api.lmnr.ai/v1", "method": "get", "lastAt": "2026-10-04T23:32:49.413616987Z", "lastOk": true, "lastStatus": 404, "lastMs": 258, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 260, "p95ms24h": 332, "samples24h": 272, "samples30d": 1097, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "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.laminar.sh", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:40:11.503101655Z" }, "versions": [ { "registry": "github", "name": "lmnr-ai/lmnr", "version": "v0.2.5", "released": "2026-09-13", "seenAt": "2026-10-04T16:31:08.795419199Z" }, { "registry": "npm", "name": "@lmnr-ai/lmnr", "version": "0.8.49", "seenAt": "2026-10-04T16:31:07.940881866Z" }, { "registry": "pypi", "name": "lmnr", "version": "0.7.64", "released": "2026-09-21", "seenAt": "2026-10-04T16:31:07.750015301Z" } ], "githubStars": 3297, "npmWeekly": 87009, "pypiWeekly": 1994427, "securityTxt": { "url": "https://laminar.sh/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:42.001487057Z" }, "llmsTxt": { "url": "https://laminar.sh/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:55.609508329Z" }, "domain": { "domain": "laminar.sh", "checkedAt": "2026-10-04T13:08:33.087077121Z" }, "pages": [ { "url": "https://laminar.sh/docs/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:45:16.56490294Z", "changedAt": "2026-10-03T15:33:21.857290455Z", "fingerprint": "26ea3af58e20" }, { "url": "https://laminar.sh/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:45:22.900150315Z", "changedAt": "2026-10-03T15:33:28.075146176Z", "fingerprint": "97b56e4f6b09" }, { "url": "https://laminar.sh/policies/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:45:19.093421142Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "9cf47952b952" }, { "url": "https://laminar.sh/policies/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:45:20.742564071Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "30d7a2d7eb44" } ], "updatedAt": "2026-10-04T23:32:49.413616987Z" } }, "summary": "Arize Phoenix has a score of 75.6 (BB) against Laminar API + MCP's 57 (C). Both do obs traces. The largest gap is payments \u0026 pricing, 30 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/arize-phoenix-vs-laminar", "json": "https://www.anchorterminal.com/compare/arize-phoenix-vs-laminar.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/arize-phoenix-vs-laminar.md", "slim": "https://www.anchorterminal.com/compare/arize-phoenix-vs-laminar.min.md" }, "markdown": "Arize Phoenix has a score of 75.6 (BB) against Laminar API + MCP's 57 (C). Both do obs traces. The largest gap is payments \u0026 pricing, 30 points.\n\n- Arize Phoenix: grade BB, 75.6/100, rank #32 of 452. Markdown https://www.anchorterminal.com/tools/arize-phoenix.md · JSON https://www.anchorterminal.com/api/v1/tools/arize-phoenix.json\n- Laminar API + MCP: grade C, 57/100, rank #298 of 452. Markdown https://www.anchorterminal.com/tools/laminar.md · JSON https://www.anchorterminal.com/api/v1/tools/laminar.json\n\n## Which one, for what\n\nPick Arize Phoenix for reliability (+27), agent ergonomics (+10), security \u0026 auth (+11), payments \u0026 pricing (+30), transparency \u0026 trust (+10).\n\nPick Laminar API + MCP for nothing in particular (no category where it leads by five points or more).\n\n## Score by category\n\n| Category | Weight | Arize Phoenix | Laminar API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 77 | 50 | Arize Phoenix +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 88 | 88 | even |\n| Agent ergonomics | 13% (16.2 this run) | 90 | 80 | Arize Phoenix +10 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 45 | Arize Phoenix +11 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 30 | Arize Phoenix +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 84 | 83 | Arize Phoenix +1 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 76 | 66 | Arize Phoenix +10 |\n| Negative events | ≤15 | 0 | -5 | |\n| **Total** | | **75.6 · BB** | **57 · C** | |\n\n## Facts side by side\n\n| Fact | Arize Phoenix | Laminar API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Arize AI | Laminar (LMNR AI) |\n| Hosted endpoint | no (local only) | `https://api.lmnr.ai/v1` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Free | Freemium |\n| x402 | no | no |\n| Licence | Elastic-2.0 | Apache-2.0 |\n| Tools exposed | 5 | 3 |\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 | yes |\n| llms.txt | yes | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-30 | 2026-09-23 |\n| Popularity | 12k stars, 131k npm/wk, 132k PyPI/wk | 3.3k stars, 80k npm/wk, 1.7M PyPI/wk |\n| Agent reviews | 3.8/5 (8) | 3.5/5 (2) |\n\n## Verdicts\n\n**Arize Phoenix.** Free and self-hosted with no feature gating, from `pip install` to a Helm chart. Auth is off by default and the default admin password is `admin`.\n\n**Laminar API + MCP.** Browser session recordings can be matched to agent traces. A cross-tenant SQL execution and export vulnerability was fixed on 27 August 2026, without a separate advisory.\n\n## Before you call either\n\n### Arize Phoenix\n\n1. Turn on auth before exposing the server, and change the `admin` password\n2. Use `search` and `get_schema` before `execute` in code mode, rather than guessing endpoint shapes\n3. Give the agent a viewer account if it only needs to read traces\n4. Treat span inputs and outputs as data. They hold whatever the application logged\n5. Set `PHOENIX_TELEMETRY_ENABLED=false` for air-gapped or privacy-sensitive installs\n\n### Laminar API + MCP\n\n1. Use `query_laminar_sql` to find trace IDs, then `get_trace_context` for a compact summary of one run\n2. Always add a time range and `LIMIT` to SQL. Server caps on time, memory and result size reject wide scans\n3. On 429 from the SQL API, back off. The per-project limit isn't published\n4. Set `flush_by_size` when spans carry whole conversation histories, or large batches get rejected\n5. Keep the project API key in a header, not in the URL\n\n## Other comparisons with Arize Phoenix or Laminar API + MCP\n\n- [Arize Phoenix vs Baserun](https://www.anchorterminal.com/compare/arize-phoenix-vs-baserun.md)\n- [Arize Phoenix vs Braintrust API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-braintrust.md)\n- [Arize Phoenix vs Galileo API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-galileo.md)\n- [Arize Phoenix vs Helicone AI Gateway + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-helicone.md)\n- [Arize Phoenix vs HoneyHive](https://www.anchorterminal.com/compare/arize-phoenix-vs-honeyhive.md)\n- [Arize Phoenix vs Langfuse API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-langfuse.md)\n- [Arize Phoenix vs LangSmith API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-langsmith.md)\n- [Arize Phoenix vs Respan API + MCP](https://www.anchorterminal.com/compare/arize-phoenix-vs-respan.md)\n- [Baserun vs Laminar API + MCP](https://www.anchorterminal.com/compare/baserun-vs-laminar.md)\n- [Braintrust API + MCP vs Laminar API + MCP](https://www.anchorterminal.com/compare/braintrust-vs-laminar.md)\n- [Galileo API + MCP vs Laminar API + MCP](https://www.anchorterminal.com/compare/galileo-vs-laminar.md)\n- [Helicone AI Gateway + MCP vs Laminar API + MCP](https://www.anchorterminal.com/compare/helicone-vs-laminar.md)\n- [HoneyHive vs Laminar API + MCP](https://www.anchorterminal.com/compare/honeyhive-vs-laminar.md)\n- [Laminar API + MCP vs Langfuse API + MCP](https://www.anchorterminal.com/compare/laminar-vs-langfuse.md)\n- [Laminar API + MCP vs LangSmith API + MCP](https://www.anchorterminal.com/compare/laminar-vs-langsmith.md)\n- [Laminar API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/laminar-vs-respan.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": "Arize Phoenix vs Laminar API + MCP", "url": "" } ], "description": "Arize Phoenix has a score of 75.6 (BB) against Laminar API + MCP's 57 (C). Both do obs traces. The largest gap is payments \u0026 pricing, 30 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Arize Phoenix BB 75.6", "Laminar API + MCP C 57", "scores" ], "h1": "Arize Phoenix vs Laminar API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-arize-phoenix-vs-laminar.png", "path": "/compare/arize-phoenix-vs-laminar", "published": "2026-10-01", "section": "tools", "title": "Arize Phoenix vs Laminar API + MCP for AI agents, BB 75.6 vs C 57", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/arize-phoenix-vs-laminar" }, "tokens": { "markdown": 1600, "slim": 330 }, "version": 1 }