{ "data": { "a": { "slug": "galileo", "name": "Galileo API + MCP", "vendor": "Galileo (now Splunk Agent Observability, Cisco)", "vendorUrl": "https://galileo.ai", "kind": "http-api", "category": "agent-observability", "summary": "Hosted tracing, evaluation metrics and guardrails for LLM apps and agents, with a REST API, Python and TypeScript SDKs and an 8-tool MCP server in preview.", "url": "https://www.anchorterminal.com/tools/galileo", "markdownUrl": "https://www.anchorterminal.com/tools/galileo.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/galileo.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/galileo.json", "repo": "https://github.com/rungalileo/galileo-python", "license": "Apache-2.0 (SDKs only, platform closed source)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.galileo.ai/v2", "packages": [ { "registry": "pypi", "name": "galileo" }, { "registry": "npm", "name": "galileo" } ], "auth": "api-key", "authNotes": "API key in a header. The current OpenAPI spec names it `Splunk-AO-API-Key` and older Galileo docs `Galileo-API-Key`. The API also issues a JWT from `/login/api_key` that expires after 24 hours and accepts HTTP Basic with a username and password. The MCP server takes the same API key header. New SaaS accounts on Splunk Observability Cloud use `https://app.{realm}.observability.splunkcloud.com/ao/api/` and Splunk's own authentication. Self-hosted deployments use their own api.* host.", "pricing": "freemium", "pricingNotes": "Free plan with 5,000 traces a month, unlimited users and unlimited custom evals. Pro $100 a month billed yearly with 50,000 traces, then priced by trace volume with no published rate. Enterprise is custom with unlimited traces, custom rate limits and hosted, VPC or on-prem deployment. The pricing page doesn't mention Splunk, but the docs say customers onboarded after 2026-08-07 should use the Splunk docs (https://galileo.ai/pricing).", "priceSummary": "$100 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 support in docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 8, "popularity": { "githubStars": null, "npmWeekly": 1431, "pypiWeekly": 6160, "asOf": "2026-09-30" }, "docsUrl": "https://docs.galileo.ai", "llmsTxt": "https://docs.galileo.ai/llms.txt", "openapi": "https://api.galileo.ai/public/v2/openapi.json", "capabilities": [ "obs.traces", "obs.evals", "obs.prompts", "obs.datasets" ], "tags": [ "hosted", "freemium", "mcp", "llms-txt", "openapi", "python", "typescript", "closed-source", "enterprise" ], "lastRelease": "2026-10-01", "graded": true, "anchor": { "graded": true, "score": 48, "grade": "D", "agentReady": false, "rank": 378, "ranked": true, "rankOf": 452, "categoryRank": 8, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 73, "maintenance": 74, "payments": 20, "reliability": 18, "schema": 79, "security": 33, "transparency": 56 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "OpenAPI 3.1 spec with 184 paths and 244 operations. No status page, no published rate limits and no SLA.", "strengths": [ "OpenAPI 3.1 spec with 184 paths and 244 operations", "Error catalogue of 111 entries with HTTP status, fix and a retriable flag", "Free plan with 5,000 traces a month and unlimited users", "TypeScript SDK released three times in September 2026, most recently 2.3.2 on 1 October", "Enterprise deployment in your VPC or on-prem" ], "weaknesses": [ "No status page, no published rate limits and no SLA", "Split between Galileo and Splunk since 7 August 2026, with two doc sites, two API hosts and no timeline for the old ones", "MCP server in preview with 8 tools, only `Get Signals` reads production data", "No security page, trust portal, security.txt or certification claim found, and the privacy policy dates from November 2024", "Python SDK quiet since 30 July and its CHANGELOG.md stuck at v0.10.0" ], "agentNotes": [ "Check which side the account lives on first. Pre-August Galileo accounts use api.galileo.ai, Splunk SaaS accounts use app.{realm}.observability.splunkcloud.com/ao/api/", "Send the key as `Splunk-AO-API-Key`. The current spec no longer lists `Galileo-API-Key`", "Page list endpoints with `limit` and `starting_token`", "Use the error catalogue's retriable flag to decide whether to retry. 429s carry no documented `Retry-After`", "Use the REST API to read traces. The MCP server mostly creates datasets and prompts" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 48 } ], "editorialScores": { "ergonomics": 73, "maintenance": 74, "payments": 20, "reliability": 18, "schema": 79, "security": 33, "transparency": 36 }, "provenanceScore": 76 }, "connect": { "http": "curl https://api.galileo.ai/v2/current_user -H \"Galileo-API-Key: $GALILEO_API_KEY\"", "claudeCode": "claude mcp add --transport http --header \"Galileo-API-Key: $GALILEO_API_KEY\" galileo https://api.galileo.ai/mcp/http/mcp", "config": { "mcpServers": { "galileo": { "headers": { "Accept": "text/event-stream", "Galileo-API-Key": "${GALILEO_API_KEY}" }, "type": "http", "url": "https://api.galileo.ai/mcp/http/mcp" } } } }, "letme": { "capability": "https://letme.dev/obs.traces", "tool": "https://letme.dev/galileo" }, "alsoIn": [ "guardrails" ], "area": "developer", "unitPrices": [ { "item": "Pro plan", "unit": "month", "usd": 100, "note": "billed yearly, 50,000 traces a month" } ], "provenance": { "legalEntity": "Galileo Technologies, Inc.", "domain": "galileo.ai", "domainRegistered": "2020-05-05", "endpointOnVendorDomain": true, "terms": "https://galileo.ai/terms-of-service", "privacy": "https://galileo.ai/privacy-policy", "statusPage": "", "changelog": "https://docs.galileo.ai/release-notes", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Now owned by Cisco and sold as Splunk Agent Observability; the terms still name Galileo Technologies, Inc." ], "score": 76 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/galileo.json", "live": { "slug": "galileo", "probe": { "target": "https://api.galileo.ai/v2", "method": "get", "lastAt": "2026-10-05T02:29:56.086742097Z", "lastOk": true, "lastStatus": 404, "lastMs": 1420, "authRequired": false, "uptime24h": 99.27, "uptime30d": 99.73, "p50ms24h": 1057, "p95ms24h": 3917, "samples24h": 273, "samples30d": 1131, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 247 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 270 }, { "date": "2026-10-05", "probes": 29, "ok": 29 } ] }, "versions": [ { "registry": "github", "name": "rungalileo/galileo-python", "version": "v2.6.0", "released": "2026-07-30", "seenAt": "2026-10-04T16:27:40.611176298Z" }, { "registry": "npm", "name": "galileo", "version": "2.3.2", "seenAt": "2026-10-04T16:27:40.188712083Z" }, { "registry": "pypi", "name": "galileo", "version": "2.6.0", "released": "2026-07-30", "seenAt": "2026-10-04T16:27:40.002157835Z" } ], "githubStars": 22, "npmWeekly": 1892, "securityTxt": { "url": "https://galileo.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:43.807289994Z" }, "llmsTxt": { "url": "https://docs.galileo.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:48.251773467Z" }, "domain": { "domain": "galileo.ai", "registered": "2020-05-05", "source": "https://rdap.identitydigital.services/rdap/domain/galileo.ai", "checkedAt": "2026-10-04T13:06:13.135112782Z" }, "pages": [ { "url": "https://docs.galileo.ai/release-notes", "kind": "deprecations", "status": 200, "checkedAt": "2026-10-04T15:43:38.210171478Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0771d4784c19" }, { "url": "https://galileo.ai/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:44:51.381606205Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0145c8cf98fd" }, { "url": "https://galileo.ai/privacy-policy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:44:53.544097308Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0a4347a8061e" }, { "url": "https://galileo.ai/terms-of-service", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:44:55.585915991Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "fe70a53f84a7" } ], "updatedAt": "2026-10-05T02:29:56.086742097Z" } }, "b": { "slug": "helicone", "name": "Helicone AI Gateway + MCP", "vendor": "Helicone (Mintlify)", "vendorUrl": "https://www.helicone.ai", "kind": "http-api", "category": "agent-observability", "summary": "Open-source LLM observability that logs requests through an OpenAI-compatible gateway (100+ models, fallbacks, caching, rate limits) or async logging.", "url": "https://www.anchorterminal.com/tools/helicone", "markdownUrl": "https://www.anchorterminal.com/tools/helicone.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/helicone.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/helicone.json", "repo": "https://github.com/Helicone/helicone", "license": "Apache-2.0", "transports": [ "http", "stdio" ], "remoteUrl": "https://ai-gateway.helicone.ai", "packages": [ { "registry": "npm", "name": "@helicone/helpers" }, { "registry": "pypi", "name": "helicone-helpers" }, { "registry": "npm", "name": "@helicone/mcp" } ], "auth": "api-key", "authNotes": "Helicone API key (`sk-helicone-...`) as a Bearer token on the gateway and REST API. Bring your own provider keys, or bill model usage to Helicone credits, which since 25 August 2026 only works for organisations Helicone has switched on (others get a 403 asking them to contact support). The MCP server reads `HELICONE_API_KEY` from the environment.", "pricing": "freemium", "pricingNotes": "Hobby free with 10,000 requests a month, 1 GB of storage, 1 seat and 7 days of retention, no card. Pro $79 a month and Team $799 a month, each with 10,000 requests and 1 GB free then usage-based charges the pricing page doesn't itemise. The pricing page still shows 7-day trials, but a commit on 30 August 2026 removed the in-app self-serve upgrade paths and sends upgrades to a contact page. Enterprise custom. Gateway credits pass model prices through at 0% markup, but since 25 August 2026 need Helicone to enable them per organisation. Self-hosted is free under Apache-2.0 with Docker Compose or Helm, you run ClickHouse, Postgres and object storage (https://www.helicone.ai/pricing).", "priceSummary": "$79 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 support in docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 3, "popularity": { "githubStars": 6190, "npmWeekly": 4328, "pypiWeekly": 4210, "asOf": "2026-09-30" }, "docsUrl": "https://docs.helicone.ai", "llmsTxt": "https://docs.helicone.ai/llms.txt", "openapi": "https://docs.helicone.ai/ai-gateway.openapi.json", "capabilities": [ "obs.traces", "obs.gateway", "obs.prompts", "obs.datasets", "obs.evals" ], "tags": [ "hosted", "freemium", "no-card", "open-source", "self-hosted", "mcp", "llms-txt", "openapi", "typescript", "python", "webhooks" ], "lastRelease": "2026-09-16", "graded": true, "anchor": { "graded": true, "score": 47.1, "grade": "D", "agentReady": false, "rank": 387, "ranked": true, "rankOf": 452, "categoryRank": 9, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 70, "maintenance": 66, "payments": 30, "reliability": 50, "schema": 69, "security": 50, "transparency": 71 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -10, "negativeNotes": [ "2026-08-30. Helicone's own security commit (INC-657) fixed an authenticated cross-tenant read of other organisations' decrypted provider keys, a route that let any account mint proxy keys spending another organisation's provider key, a shared client that reused one organisation's OpenRouter key for others, an unauthenticated SSRF path and unauthenticated Stripe routes. Fixed, but disclosed only in the commit message, with no advisory or key-rotation notice that we found. -7 after decay for the fix (https://github.com/Helicone/helicone/commit/ca34549ea56f7ed587843f82d9cc19baa1f36ba4)", "2026-09-16. A second fix closed a platform-admin takeover with a forged API key and a cross-tenant read through HQL, reported through Helicone's disclosure programme the same day. Fixed within hours and again disclosed only in the commit. -3 (https://github.com/Helicone/helicone/commit/067d9290acb4f1fc9320e902fc67b4b399b50363)" ], "verdict": "One base-URL change gives logging, caching, fallbacks and rate limits for 100+ models. Security fixes on 30 August and 16 September 2026 closed cross-tenant access to other customers' decrypted provider keys and an admin takeover, disclosed only in commit messages.", "strengths": [ "One base-URL change gives logging, caching, fallbacks and rate limits for 100+ models", "Apache-2.0 with Docker Compose and Helm self-hosting", "Per-plan ingestion and API rate limits published on the pricing page", "OpenAPI for the gateway, a Swagger file for the REST API and an llms.txt", "Free Hobby plan with 10,000 requests a month and no card" ], "weaknesses": [ "Security fixes on 30 August and 16 September 2026 closed cross-tenant access to other customers' decrypted provider keys and an admin takeover, disclosed only in commit messages", "Maintenance mode since March 2026, changelog silent since 26 November 2025, and Experiments, Realtime and self-serve upgrades removed on 30 August 2026", "The status page has no incident history, leaves out the AI Gateway and doesn't mention the four-day outage of 14 to 18 May 2026", "Helicone credits need a per-organisation switch since 25 August 2026, so new accounts must bring their own provider keys", "Privacy policy last updated in February 2023, with no retention period or DPA" ], "agentNotes": [ "Bring your own provider keys. Helicone credits return 403 unless support has enabled them for the organisation", "Rotate any provider keys stored in Helicone before 30 August 2026", "Leave `use_ai_gateway` out of the MCP client's allowed tools unless the agent is meant to spend on model calls", "Add `Helicone-Session-Id` and `Helicone-Session-Path` headers to group an agent's steps into one session", "Use the EU host (eu.helicone.ai) if the account was created there" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 47.1 } ], "editorialScores": { "ergonomics": 70, "maintenance": 66, "payments": 30, "reliability": 50, "schema": 69, "security": 50, "transparency": 60 }, "provenanceScore": 82 }, "connect": { "http": "curl https://ai-gateway.helicone.ai/chat/completions -H \"Authorization: Bearer $HELICONE_API_KEY\" \\\n -H \"content-type: application/json\" -d '{\"model\":\"gpt-4o-mini\",\"messages\":[{\"role\":\"user\",\"content\":\"Hello\"}]}'", "claudeCode": "claude mcp add helicone -e HELICONE_API_KEY=$HELICONE_API_KEY -- npx -y @helicone/mcp@latest", "config": { "mcpServers": { "helicone": { "args": [ "-y", "@helicone/mcp@latest" ], "command": "npx", "env": { "HELICONE_API_KEY": "${HELICONE_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/obs.traces", "tool": "https://letme.dev/helicone" }, "area": "developer", "unitPrices": [ { "item": "Pro plan", "unit": "month", "usd": 79, "note": "10,000 requests and 1 GB free, then usage-based" }, { "item": "Team plan", "unit": "month", "usd": 799, "note": "5 organisations, SOC 2 and HIPAA, 10,000 requests and 1 GB free, then usage-based" } ], "provenance": { "legalEntity": "Helicone, Inc.", "domain": "helicone.ai", "domainRegistered": "2022-11-14", "endpointOnVendorDomain": true, "terms": "https://www.helicone.ai/terms", "privacy": "https://www.helicone.ai/privacy", "statusPage": "https://status.helicone.ai", "changelog": "https://www.helicone.ai/changelog", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Terms still name Helicone, Inc. and were last updated 2024-09-17, before the Mintlify acquisition" ], "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/helicone.json", "live": { "slug": "helicone", "probe": { "target": "https://ai-gateway.helicone.ai", "method": "get", "lastAt": "2026-10-05T02:29:56.494648553Z", "lastOk": true, "lastStatus": 405, "lastMs": 128, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 44, "p95ms24h": 222, "samples24h": 273, "samples30d": 1131, "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": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 29, "ok": 29 } ] }, "vendorStatus": { "page": "https://status.helicone.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:40:07.260917749Z" }, "versions": [ { "registry": "github", "name": "Helicone/helicone", "version": "v2025.08.21-1", "released": "2025-08-21", "seenAt": "2026-10-04T16:29:35.379994311Z" }, { "registry": "npm", "name": "@helicone/helpers", "version": "1.8.3", "seenAt": "2026-10-04T16:29:33.162290788Z" }, { "registry": "npm", "name": "@helicone/mcp", "version": "0.1.6", "seenAt": "2026-10-04T16:29:34.165843645Z" }, { "registry": "pypi", "name": "helicone-helpers", "version": "1.2.1", "released": "2025-11-08", "seenAt": "2026-10-04T16:29:33.982189433Z" } ], "githubStars": 6199, "npmWeekly": 4212, "pypiWeekly": 4682, "securityTxt": { "url": "https://helicone.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:42.63667923Z" }, "llmsTxt": { "url": "https://docs.helicone.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:52.198561612Z" }, "domain": { "domain": "helicone.ai", "registered": "2022-11-14", "source": "https://rdap.identitydigital.services/rdap/domain/helicone.ai", "checkedAt": "2026-10-04T13:08:06.915944951Z" }, "pages": [ { "url": "https://www.helicone.ai/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:50:40.612062964Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1af05c56483a" }, { "url": "https://www.helicone.ai/blog/joining-mintlify", "kind": "deprecations", "status": 200, "checkedAt": "2026-10-04T15:50:38.173666232Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a82c441b1103" }, { "url": "https://www.helicone.ai/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:50:42.468836302Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "4b1e79419d28" }, { "url": "https://www.helicone.ai/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:50:44.402436735Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "47e9ad5d395a" }, { "url": "https://www.helicone.ai/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:50:46.370943239Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "adbbffec4ecd" } ], "updatedAt": "2026-10-05T02:29:56.494648553Z" } }, "summary": "Galileo API + MCP has a score of 48 (D) against Helicone AI Gateway + MCP's 47.1 (D). Both do obs traces. The largest gap is reliability, 32 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/galileo-vs-helicone", "json": "https://www.anchorterminal.com/compare/galileo-vs-helicone.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/galileo-vs-helicone.md", "slim": "https://www.anchorterminal.com/compare/galileo-vs-helicone.min.md" }, "markdown": "Galileo API + MCP has a score of 48 (D) against Helicone AI Gateway + MCP's 47.1 (D). Both do obs traces. The largest gap is reliability, 32 points.\n\n- Galileo API + MCP: grade D, 48/100, rank #378 of 452. Markdown https://www.anchorterminal.com/tools/galileo.md · JSON https://www.anchorterminal.com/api/v1/tools/galileo.json\n- Helicone AI Gateway + MCP: grade D, 47.1/100, rank #387 of 452. Markdown https://www.anchorterminal.com/tools/helicone.md · JSON https://www.anchorterminal.com/api/v1/tools/helicone.json\n\n## Which one, for what\n\nPick Galileo API + MCP for schema \u0026 documentation (+10), maintenance \u0026 community (+8).\n\nPick Helicone AI Gateway + MCP for reliability (+32), security \u0026 auth (+17), payments \u0026 pricing (+10), transparency \u0026 trust (+15).\n\n## Score by category\n\n| Category | Weight | Galileo API + MCP | Helicone AI Gateway + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 18 | 50 | Helicone AI Gateway + MCP +32 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 79 | 69 | Galileo API + MCP +10 |\n| Agent ergonomics | 13% (16.2 this run) | 73 | 70 | Galileo API + MCP +3 |\n| Security \u0026 auth | 14% (17.5 this run) | 33 | 50 | Helicone AI Gateway + MCP +17 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 30 | Helicone AI Gateway + MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 74 | 66 | Galileo API + MCP +8 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 56 | 71 | Helicone AI Gateway + MCP +15 |\n| Negative events | ≤15 | 0 | -10 | |\n| **Total** | | **48 · D** | **47.1 · D** | |\n\n## Facts side by side\n\n| Fact | Galileo API + MCP | Helicone AI Gateway + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Galileo (now Splunk Agent Observability, Cisco) | Helicone (Mintlify) |\n| Hosted endpoint | `https://api.galileo.ai/v2` | `https://ai-gateway.helicone.ai` |\n| Transports | HTTP, Streamable HTTP | HTTP, stdio |\n| Auth | API key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (SDKs only, platform closed source) | Apache-2.0 |\n| Tools exposed | 8 | 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 | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-10-01 | 2026-09-16 |\n| Popularity | 1.4k npm/wk, 6.2k PyPI/wk | 6.2k stars, 4.3k npm/wk, 4.2k PyPI/wk |\n| Agent reviews | 2.5/5 (2) | 2/5 (2) |\n\n## Verdicts\n\n**Galileo API + MCP.** OpenAPI 3.1 spec with 184 paths and 244 operations. No status page, no published rate limits and no SLA.\n\n**Helicone AI Gateway + MCP.** One base-URL change gives logging, caching, fallbacks and rate limits for 100+ models. Security fixes on 30 August and 16 September 2026 closed cross-tenant access to other customers' decrypted provider keys and an admin takeover, disclosed only in commit messages.\n\n## Before you call either\n\n### Galileo API + MCP\n\n1. Check which side the account lives on first. Pre-August Galileo accounts use api.galileo.ai, Splunk SaaS accounts use app.{realm}.observability.splunkcloud.com/ao/api/\n2. Send the key as `Splunk-AO-API-Key`. The current spec no longer lists `Galileo-API-Key`\n3. Page list endpoints with `limit` and `starting_token`\n4. Use the error catalogue's retriable flag to decide whether to retry. 429s carry no documented `Retry-After`\n5. Use the REST API to read traces. The MCP server mostly creates datasets and prompts\n\n### Helicone AI Gateway + MCP\n\n1. Bring your own provider keys. Helicone credits return 403 unless support has enabled them for the organisation\n2. Rotate any provider keys stored in Helicone before 30 August 2026\n3. Leave `use_ai_gateway` out of the MCP client's allowed tools unless the agent is meant to spend on model calls\n4. Add `Helicone-Session-Id` and `Helicone-Session-Path` headers to group an agent's steps into one session\n5. Use the EU host (eu.helicone.ai) if the account was created there\n\n## Other comparisons with Galileo API + MCP or Helicone AI Gateway + MCP\n\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- [Baserun vs Galileo API + MCP](https://www.anchorterminal.com/compare/baserun-vs-galileo.md)\n- [Baserun vs Helicone AI Gateway + MCP](https://www.anchorterminal.com/compare/baserun-vs-helicone.md)\n- [Braintrust API + MCP vs Galileo API + MCP](https://www.anchorterminal.com/compare/braintrust-vs-galileo.md)\n- [Braintrust API + MCP vs Helicone AI Gateway + MCP](https://www.anchorterminal.com/compare/braintrust-vs-helicone.md)\n- [Galileo API + MCP vs HoneyHive](https://www.anchorterminal.com/compare/galileo-vs-honeyhive.md)\n- [Galileo API + MCP vs Laminar API + MCP](https://www.anchorterminal.com/compare/galileo-vs-laminar.md)\n- [Galileo API + MCP vs Langfuse API + MCP](https://www.anchorterminal.com/compare/galileo-vs-langfuse.md)\n- [Galileo API + MCP vs LangSmith API + MCP](https://www.anchorterminal.com/compare/galileo-vs-langsmith.md)\n- [Galileo API + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/galileo-vs-respan.md)\n- [Helicone AI Gateway + MCP vs HoneyHive](https://www.anchorterminal.com/compare/helicone-vs-honeyhive.md)\n- [Helicone AI Gateway + MCP vs Laminar API + MCP](https://www.anchorterminal.com/compare/helicone-vs-laminar.md)\n- [Helicone AI Gateway + MCP vs Langfuse API + MCP](https://www.anchorterminal.com/compare/helicone-vs-langfuse.md)\n- [Helicone AI Gateway + MCP vs LangSmith API + MCP](https://www.anchorterminal.com/compare/helicone-vs-langsmith.md)\n- [Helicone AI Gateway + MCP vs Respan API + MCP](https://www.anchorterminal.com/compare/helicone-vs-respan.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-05", "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": "Galileo API + MCP vs Helicone AI Gateway + MCP", "url": "" } ], "description": "Galileo API + MCP has a score of 48 (D) against Helicone AI Gateway + MCP's 47.1 (D). Both do obs traces. The largest gap is reliability, 32 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Galileo API + MCP D 48", "Helicone AI Gateway + MCP D 47.1", "scores" ], "h1": "Galileo API + MCP vs Helicone AI Gateway + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-galileo-vs-helicone.png", "path": "/compare/galileo-vs-helicone", "published": "2026-10-01", "section": "tools", "title": "Galileo API + MCP vs Helicone AI Gateway + MCP for AI agents", "toc": null, "updated": "2026-10-05", "url": "https://www.anchorterminal.com/compare/galileo-vs-helicone" }, "tokens": { "markdown": 1700, "slim": 380 }, "version": 1 }