Head-to-head
EvalGuard vs Arize AI / Phoenix.
Best free observability platform, zero securityArize Phoenix is the best completely free observability platform with 7.8K GitHub stars and 2.5M+ downloads. It offers pre-built evaluators and many provider integrations. However, it has zero red teaming, zero attack plugins, no firewall, no gateway, and no prompt IDE.
7
EvalGuard wins
1
Ties
2
Arize AI / Phoenix wins
Competitor data (GitHub stars, downloads, feature counts, funding / acquisition status) verified as of 2026-04-28. EvalGuard's own counts are sourced live from the drift-checked registry.
Coverage at a glance
EvalGuard vs Arize AI / Phoenix, by the numbers
Where both platforms publish a number, here's the gap. Our values come straight from the drift-checked registry; Arize AI / Phoenix's are quoted as published.
Attack Plugins
EvalGuard0
Arize AI / Phoenix0
Compliance Frameworks
EvalGuard0
Arize AI / Phoenix0
Open Source
EvalGuard0
Arize AI / Phoenix0
| Feature | EvalGuard | Arize AI / Phoenix |
|---|---|---|
| Attack Plugins | 250+ | 0 |
| Eval Scorers | 200+ | Pre-built evaluators |
| Compliance Frameworks | 33 | 1 |
| LLM Firewall | 5-layer | No |
| LLM Gateway | Yes | No |
| Observability | OpenTelemetry | Best-in-class (free) |
| Prompt IDE | Yes | No |
| NL→Eval Pipeline | Yes (unique) | No |
| Pricing | Free tier | Completely free |
| Open Source | Apache 2.0 | Yes (7.8K★, 2.5M+ downloads) |
Why choose EvalGuard over Arize AI / Phoenix
- 250+ attack plugins + 200+ scorers — Phoenix has zero security testing
- 33 compliance frameworks — Phoenix has 1
- 5-layer firewall + gateway — Phoenix has neither
- All-in-one: eval + security + observability + gateway
Where Arize AI / Phoenix leads
- Arize Phoenix is completely free with excellent observability
- Phoenix has 7.8K GitHub stars and 2.5M+ downloads
- Phoenix has best-in-class free-tier LLM tracing and evaluation
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