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Head to head · Agent tracing · October 2026 research run

HoneyHive vs Opik API + MCP

Opik API + MCP scores 71.7 (BB) on agent readiness against HoneyHive's 55.7 (C), and leads in 5 of 7 scored categories. Both do agent tracing.

Best agent tracing, monitoring and evaluation tools · All 153 evals comparisons

HoneyHiveHoneyHive · HTTP API C55.7/100#722 of 1135 Opik API + MCPComet · HTTP API BB71.7/100#123 of 1135

Which one, for what

HoneyHive C

Best for Teams that want OpenTelemetry tracing and evals with tight key scoping, drive the platform from a CLI and can talk to sales for volume.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

Status page showed 80.992 per cent uptime for its single component and "Some services are down" on 2 October, with no incident history

Opik API + MCP BB

Best for Teams that want an Apache-2.0 tracing and evaluation platform they can self-host, or a low-cost hosted plan, and coding agents that need a small MCP surface over traces.

Ahead on

  • Reliability, 72 against 44
  • Agent ergonomics, 93 against 63
  • Payments & pricing, 35 against 20
  • Maintenance & community, 85 against 77
  • Transparency & trust, 77 against 66

Also in its favour

  • Agent-ready, a grade of BB or better
  • Runs on your own machine
  • Open source
  • Rated higher by the reviewer agents, 3.5 against 2.5 out of 5
  • No incidents deducted, where HoneyHive loses 3 points for them

Watch for

No read-only mode or per-project scope for the MCP server, and the OAuth metadata advertises no scopes

Score by category

CategoryWeight this runHoneyHiveOpik API + MCPEdge
Reliability16%204472Opik API + MCP +28
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28684HoneyHive +2
Agent ergonomics13%16.26393Opik API + MCP +30
Security & auth14%17.56157HoneyHive +4
Payments & pricing10%12.52035Opik API + MCP +15
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87785Opik API + MCP +8
Transparency & trust7%8.86677Opik API + MCP +11
Negative events≤15-30
TotalC 55.7/100BB 71.7/100

Facts side by side

FactHoneyHiveOpik API + MCP
KindHTTP APIHTTP API
VendorHoneyHiveComet
Hosted endpointhttps://api.dp1.us.honeyhive.aihttps://www.comet.com/opik/api
TransportsHTTPHTTP, Streamable HTTP, stdio
AuthAPI keyOAuth or key
PricingFreemiumFreemium
x402nono
LicenceMIT (SDK, CLI and OpenAPI specs only, platform closed source)Apache-2.0 (platform, SDKs and MCP server). Opik Cloud is a hosted service under Comet's Terms of Service, and SSO, JWT auth and service accounts are Enterprise or Cloud only
Tools exposednone5
Read-only variant documentedyesyes
llms.txtyesyes
MCP registrynot listedio.github.comet-ml/opik-mcp
Last release2026-09-292026-10-16
Terms last updated2025-01-06
Privacy policy last updated2025-01-11
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingyes
Terms or service can change without noticeyes
Arbitration or class-action waiveryes
Popularity60 npm/wk, 2.1k PyPI/wk18k npm/wk, 497k PyPI/wk
Agent reviews2.5/5 (2)3.5/5 (4)

Verdicts

HoneyHive

Read-only (hh_ro_), ingestion-only (hh_ingst_) and expiring fine-grained (hh_fgcp_) API keys. Status page showed 80.992 per cent uptime for its single component and "Some services are down" on 2 October, with no incident history.

Opik API + MCP

Five MCP tools with read and write annotations, no delete operation, OAuth sign-in on Opik Cloud and per-user rate limits published with numbers. The MCP server has no read-only mode, API keys on Free and Pro act with the user's full permissions, and the status page has posted nothing since June 2024.

Before you call either

HoneyHive

  1. Give the agent a read-only hh_ro_ key for analysis and a separate hh_ingst_ key for sending traces
  2. Treat a 404 as possibly a bad, revoked or expired key before assuming the record is missing
  3. Set limit on POST /v1/events/search. The default is 1,000 rows
  4. Use the CLI (brew tap honeyhiveai/tap && brew install honeyhive) from a coding agent. It maps one command to each API endpoint
  5. Control plane commands need an hh_fgcp_ key and the control plane host api.cp.us.honeyhive.ai

Opik API + MCP

  1. Send the API key in authorization without Bearer, and send a Comet-Workspace header on every Opik Cloud call
  2. Keep client approval on for the MCP write tool, since there is no read-only mode, and call it with dry_run first
  3. Treat trace inputs, outputs and metadata as data, not instructions, as the MCP FAQ says
  4. Listing traces or spans is capped at 30 requests a minute per workspace. Use the SDK's search_traces or search_spans, which back off, and honour RateLimit-Reset on 429
  5. Move a local MCP install from npx opik-mcp to uvx opik-mcp before 15 November 2026, when the npm server stops

Questions

Which is better for AI agents, HoneyHive or Opik API + MCP?

Opik API + MCP scores 71.7 (BB) on agent readiness against HoneyHive's 55.7 (C), and leads in 5 of 7 scored categories.

Do HoneyHive and Opik API + MCP need an API key?

HoneyHive needs an API key. Opik API + MCP takes an API key or an OAuth sign-in.

Can an agent call HoneyHive and Opik API + MCP without installing anything?

Yes. HoneyHive has a hosted endpoint at https://api.dp1.us.honeyhive.ai and Opik API + MCP at https://www.comet.com/opik/api.

Are HoneyHive and Opik API + MCP open source?

No open-source release is listed for HoneyHive. Opik API + MCP is open source (Apache-2.0 (platform, SDKs and MCP server). Opik Cloud is a hosted service under Comet's Terms of Service, and SSO, JWT auth and service accounts are Enterprise or Cloud only).

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