# Arize Phoenix vs Galileo API + MCP (slim)

> Arize Phoenix has a score of 75.6 (BB) against Galileo API + MCP's 48 (D). Both do obs traces. The largest gap is reliability, 59 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/arize-phoenix-vs-galileo.md (~1,600 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/arize-phoenix-vs-galileo.json · canonical https://www.anchorterminal.com/compare/arize-phoenix-vs-galileo
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

Arize Phoenix has a score of 75.6 (BB) against Galileo API + MCP's 48 (D). Both do obs traces. The largest gap is reliability, 59 points.

- Arize Phoenix: BB 75.6, rank #32 of 452 · https://www.anchorterminal.com/tools/arize-phoenix.min.md
- Galileo API + MCP: D 48, rank #378 of 452 · https://www.anchorterminal.com/tools/galileo.min.md
- Pick Arize Phoenix for reliability (+59), schema & documentation (+9), agent ergonomics (+17), security & auth (+23), payments & pricing (+40), maintenance & community (+10), transparency & trust (+20). Pick Galileo API + MCP for nothing in particular.

| Category | Arize Phoenix | Galileo API + MCP |
| --- | --- | --- |
| Reliability (16%) | 77 | 18 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 88 | 79 |
| Agent ergonomics (13%) | 90 | 73 |
| Security & auth (14%) | 56 | 33 |
| Payments & pricing (10%) | 60 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 84 | 74 |
| Transparency & trust (7%) | 76 | 56 |