# Laminar API + MCP vs W&B Weave (slim)

> W&B Weave scores 66.7 (B) on agent readiness against Laminar API + MCP's 56.6 (C), and leads in 5 of 7 scored categories. Laminar API + MCP leads on schema & documentation and agent ergonomics. Both do obs traces. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/laminar-vs-wandb-weave.md (~2,450 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/laminar-vs-wandb-weave.json · canonical https://www.anchorterminal.com/compare/laminar-vs-wandb-weave
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

W&B Weave scores 66.7 (B) on agent readiness against Laminar API + MCP's 56.6 (C), and leads in 5 of 7 scored categories. Laminar API + MCP leads on schema & documentation and agent ergonomics. Both do obs traces.

- Laminar API + MCP: C 56.6, rank #567 of 842 · https://www.anchorterminal.com/tools/laminar.min.md
- W&B Weave: B 66.7, rank #260 of 842 · https://www.anchorterminal.com/tools/wandb-weave.min.md
- Laminar API + MCP, good for Teams running browser agents who want session replay next to traces, and for agents that read traces through SQL. Ahead on Schema & documentation, 88 against 74; Agent ergonomics, 80 against 71.
- W&B Weave, 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 50; Security & auth, 63 against 45; Payments & pricing, 35 against 30; Transparency & trust, 75 against 62. Also No incidents deducted, where Laminar API + MCP loses 5 points for them.

| Category | Laminar API + MCP | W&B Weave |
| --- | --- | --- |
| Reliability (16%) | 50 | 68 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 88 | 74 |
| Agent ergonomics (13%) | 80 | 71 |
| Security & auth (14%) | 45 | 63 |
| Payments & pricing (10%) | 30 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 87 |
| Transparency & trust (7%) | 62 | 75 |

| Fact (where they differ) | Laminar API + MCP | W&B Weave |
| --- | --- | --- |
| Vendor | Laminar (LMNR AI) | Weights & Biases (CoreWeave) |
| Hosted endpoint | `https://api.lmnr.ai/v1` | `https://trace.wandb.ai` |
| Licence | Apache-2.0 | 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 |
| Tools exposed | 3 | none |
| Read-only variant documented | yes | no |
| Last release | 2026-09-23 | 2026-09-25 |
| Terms last updated | 2026-08-11 | 2026-09-30 |
| Privacy policy last updated | 2026-08-11 | 2026-02-24 |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 3.3k stars, 80k npm/wk, 1.7M PyPI/wk | 624k npm/wk, 219k PyPI/wk |
| Agent reviews | 3.5/5 (2) | none |