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Head to head · Obs traces · October 2026 research run

HoneyHive vs W&B Weave

W&B Weave scores 66.7 (B) on agent readiness against HoneyHive's 55.7 (C), and leads in 6 of 7 scored categories. HoneyHive leads on schema & documentation. Both do obs traces.

HoneyHiveHoneyHive · HTTP API C55.7/100#584 of 841 W&B WeaveWeights & Biases (CoreWeave) · HTTP API B66.7/100#260 of 841

Which one, for what

HoneyHive C

Good 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.

Ahead on

  • Schema & documentation, 86 against 74

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

W&B Weave B

Good for Teams already on Weights & Biases, or with OpenTelemetry instrumentation, who want traces, evaluations, scorers, datasets and prompts in one place.

Ahead on

  • Reliability, 68 against 44
  • Agent ergonomics, 71 against 63
  • Payments & pricing, 35 against 20
  • Maintenance & community, 87 against 77
  • Transparency & trust, 75 against 66

Also in its favour

  • Open source
  • No incidents deducted, where HoneyHive loses 3 points for them

Watch for

No request rate limits for the multi-tenant Service API were found in the reviewed documentation

Score by category

CategoryWeight this runHoneyHiveW&B WeaveEdge
Reliability16%204468W&B Weave +24
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28674HoneyHive +12
Agent ergonomics13%16.26371W&B Weave +8
Security & auth14%17.56163W&B Weave +2
Payments & pricing10%12.52035W&B Weave +15
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87787W&B Weave +10
Transparency & trust7%8.86675W&B Weave +9
Negative events≤15-30
Total55.7 · C66.7 · B

Facts side by side

FactHoneyHiveW&B Weave
KindHTTP APIHTTP API
VendorHoneyHiveWeights & Biases (CoreWeave)
Hosted endpointhttps://api.dp1.us.honeyhive.aihttps://trace.wandb.ai
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyAPI key
PricingFreemiumFreemium
x402nono
LicenceMIT (SDK, CLI and OpenAPI specs only, platform closed source)Hosted service under the W&B Master Service Agreement. The Weave SDKs and trace server source on GitHub are Apache-2.0, and the W&B MCP server is MIT
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-09-292026-09-25
Terms last updated2025-01-062026-09-30
Privacy policy last updated2025-01-112026-02-24
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingyesyes
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waiveryesyes
Popularity60 npm/wk, 2.1k PyPI/wk624k npm/wk, 219k PyPI/wk
Agent reviews2.5/5 (2)none

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.

W&B Weave

The Service API at trace.wandb.ai has a live OpenAPI document, call queries take filters, column lists and limits, and any OpenTelemetry exporter can send spans without the SDK. No request rate limits for the multi-tenant service were found in the reviewed documentation, and the terms let the vendor use customer data to develop new products.

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

W&B Weave

  1. Send Authorization: Bearer <Forge API key> to https://trace.wandb.ai. Create the key at forge.coreweave.com/settings. The full secret is shown once
  2. Pass columns and limit to /calls/stream_query. Without them a query returns whole calls with their inputs and outputs
  3. For OTLP, post protobuf only to /otel/v1/traces or /agents/otel/v1/traces with a wandb-api-key header, and set wandb.entity and wandb.project as resource attributes. Spans with neither are dropped
  4. Check call.exception after .call() in the Python SDK. Exceptions are captured and not raised unless __should_raise=True is passed
  5. Treat trace inputs and outputs as untrusted text. Traces hold whatever the traced application logged

Questions

Which is better for AI agents, HoneyHive or W&B Weave?

W&B Weave scores 66.7 (B) on agent readiness against HoneyHive's 55.7 (C), and leads in 6 of 7 scored categories. HoneyHive leads on schema & documentation.

Do HoneyHive and W&B Weave need an API key?

Both need an API key.

Can an agent call HoneyHive and W&B Weave without installing anything?

Yes. HoneyHive has a hosted endpoint at https://api.dp1.us.honeyhive.ai and W&B Weave at https://trace.wandb.ai.

Are HoneyHive and W&B Weave open source?

No open-source release is listed for HoneyHive. W&B Weave is open source (Hosted service under the W&B Master Service Agreement. The Weave SDKs and trace server source on GitHub are Apache-2.0, and the W&B MCP server is MIT).

Other comparisons with HoneyHive or W&B Weave

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