Compare All AI Observability & Evals Software 2026
Side-by-side comparison of 10 ai observability & evals tools. Find the right fit for your team and budget.
Quick Answer
AI Observability & Evals software billed monthly typically runs Free to $2.5K per month in 2026. The average across 6 tools is $308 per month. 10 of 10 tools offer free tiers.
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Full Comparison Matrix
| Product | Starting Price | Popular Tier | Enterprise | Free Tier | Best For |
|---|---|---|---|---|---|
| Datadog LLM Observability | Free /month | $23 /month | $41 /month | Yes | - |
| Arize Phoenix | Free /month | $50 /month | $1K /month | Yes | Teams wanting self-hosted observability |
| Helicone | Free /month | $79 /month | $2K /month | Yes | Side projects and evaluation |
| The Context Company | Free /month | $200 /month | $400 /month | Yes | Solo developers instrumenting a first agent |
| Braintrust | Free /month | $249 /month | $1K /month | Yes | Solo developers and small evaluations |
| Langfuse | Free /month | $1.2K /month | $2.5K /month | Yes | Hobby projects and POCs |
Category Summary
10
Products
$308
Avg /mo (6 tools)
10
Free Tiers