# LangSmith API + MCP vs Respan API + MCP (slim)

> LangSmith API + MCP has a score of 71.3 (BB) against Respan API + MCP's 65.9 (B). Both do obs traces. The largest gap is transparency & trust, 17 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/langsmith-vs-respan.md (~1,700 tokens) · this version ~330 tokens · JSON https://www.anchorterminal.com/compare/langsmith-vs-respan.json · canonical https://www.anchorterminal.com/compare/langsmith-vs-respan
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

LangSmith API + MCP has a score of 71.3 (BB) against Respan API + MCP's 65.9 (B). Both do obs traces. The largest gap is transparency & trust, 17 points.

- LangSmith API + MCP: BB 71.3, rank #85 of 452 · https://www.anchorterminal.com/tools/langsmith.min.md
- Respan API + MCP: B 65.9, rank #165 of 452 · https://www.anchorterminal.com/tools/respan.min.md
- Pick LangSmith API + MCP for reliability (+8), agent ergonomics (+10), security & auth (+11), payments & pricing (+10), transparency & trust (+17). Pick Respan API + MCP for nothing in particular.

| Category | LangSmith API + MCP | Respan API + MCP |
| --- | --- | --- |
| Reliability (16%) | 81 | 73 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 89 |
| Agent ergonomics (13%) | 76 | 66 |
| Security & auth (14%) | 77 | 66 |
| Payments & pricing (10%) | 40 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 85 | 85 |
| Transparency & trust (7%) | 78 | 61 |