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Maxim AI vs Braintrust
Quick verdict
Maxim AI and Braintrust are closely matched on licensing, self-hosting and OpenTelemetry support — the decision comes down to pricing and framework integrations below.
Side-by-side comparison from the Agent Observability Index: licensing, self-hosting, pricing model and integrations — no vendor copy, primary sources linked.
| Maxim AI | Braintrust | |
|---|---|---|
| One-liner | End-to-end agent simulation, evaluation and observability platform pitched at cross-functional product and engineering teams. | Eval-first AI engineering platform with logging, datasets, an LLM proxy and a purpose-built trace database (Brainstore), aimed at production regression-catching. |
| Category | Evals & Testing | Evals & Testing |
| OpenTelemetry-native | — | — |
| Open source | No | No |
| Self-hostable | Yes | Yes |
| Pricing model | freemium | freemium |
| Pricing notes | Free tier; paid plans + enterprise in-VPC deployment | Free developer tier; usage-based paid plans; enterprise hybrid/self-hosted data plane |
| Frameworks | openai-sdk, langchain, crewai, vercel-ai, litellm | openai-sdk, anthropic, langchain, vercel-ai |
| GitHub stars | — | — |
| Maturity (GitHub signal) | — (no public repo) | — (no public repo) |
| Funding / ownership | $3M seed (Elevation Capital) | $36M Series A (a16z, 2024) + $80M Series B (ICONIQ, Feb 2026, ~$800M valuation) |
How to choose
- Both link to primary pricing sources below — verify current tiers before committing; this market shifts monthly.
Sources: Maxim AI · Braintrust
Frequently asked questions
Is Maxim AI or Braintrust open source?
Maxim AI: No. Braintrust: No.
Can Maxim AI and Braintrust be self-hosted?
Maxim AI: Yes. Braintrust: Yes.
Maxim AI vs Braintrust: which should I choose?
Maxim AI and Braintrust are closely matched on licensing, self-hosting and OpenTelemetry support — the decision comes down to pricing and framework integrations below.