{"slug":"braintrust","url":"https://www.altairalabs.ai/vs/braintrust/","markdown":"https://www.altairalabs.ai/vs/braintrust.md","name":"Braintrust","vendor":"Braintrust","category":"Tracing and evaluation","checked":"2026-10-22","summary":"Omnia holds a release below a score threshold, rolls out on live scores, and runs in your own cluster. Braintrust scores the eval, and what happens to the release is up to your pipeline.","headline":"Braintrust measures quality. Omnia makes quality the release gate.","scene":{"setup":"A prompt change drops task completion from 94% to 81%.","omnia":"The suite carries its own pass threshold. 81% is below it, so the version stops at the gate.","omniaCaps":["deploy-gate","selfplay","tool-assertions"],"them":"bt eval returns a non-zero exit code if any eval throws an exception. Failing on a score needs a custom reporter.","source":"https://www.braintrust.dev/docs/evaluate/run-in-ci","omniaEvidence":"https://promptarena.altairalabs.ai/arena/how-to/interfaces/run-in-ci/"},"differences":[{"title":"The gate is the quality bar","body":"Each version faces simulated users, hostile and voice callers, and assertions on the tool calls it makes. The threshold is part of the suite, and the gate reads it directly.","caps":["selfplay","adversarial","voice-testing","deploy-gate"],"them":"CI gates on exceptions by default; voice simulation comes through a partner.","source":"https://www.braintrust.dev/docs/evaluate/run-in-ci","omniaEnterprise":false,"omniaEvidence":"https://promptarena.altairalabs.ai/arena/explanation/scenario-design/"},{"title":"Online scores that act","body":"Online scores feed the rollout. Each step to more traffic waits for them, and a drop triggers a rollback.","caps":["progressive-rollout","metric-gated-promotion"],"them":"Online scoring runs asynchronously in the background, on a sample.","source":"https://www.braintrust.dev/docs/evaluate/score-online","omniaEnterprise":true,"omniaEvidence":"https://omnia.altairalabs.ai/tutorials/progressive-rollouts/"},{"title":"All of it in your cluster","body":"Testing, the runtime, the scores and the session archive stay in your Kubernetes cluster, on every edition.","caps":["workspaces","warehouse-archive","tracing"],"them":"Self-hosting is on the Enterprise plan, with Braintrust hosting the control plane.","source":"https://www.braintrust.dev/docs/guides/self-hosting","omniaEnterprise":false,"omniaEvidence":"https://omnia.altairalabs.ai/how-to/workspaces/manage-workspaces/"}],"rows":[{"topic":"Datasets and scorers","omnia":"Scenarios, assertions and judges.","caps":["tool-assertions","judge-evals"],"them":"Datasets, scorers, playground.","coverage":"yes","source":"https://www.braintrust.dev/docs/evaluate/score-online","omniaEnterprise":true,"omniaEvidence":"https://promptarena.altairalabs.ai/arena/reference/assertions/"},{"topic":"Quality gate in CI","omnia":"Built in.","caps":["deploy-gate"],"them":"Custom reporter.","coverage":"partly","source":"https://www.braintrust.dev/docs/evaluate/run-in-ci","omniaEnterprise":false,"omniaEvidence":"https://promptarena.altairalabs.ai/arena/how-to/interfaces/run-in-ci/"},{"topic":"Simulated users","omnia":"Multi-turn, against real tools.","caps":["selfplay"],"them":"Not documented.","coverage":"undocumented","source":"https://www.braintrust.dev/docs/evaluate/score-online","omniaEnterprise":false,"omniaEvidence":"https://promptarena.altairalabs.ai/arena/explanation/scenario-design/"},{"topic":"Voice testing","omnia":"Built in.","caps":["voice-testing"],"them":"Through a partner.","coverage":"partly","source":"https://www.braintrust.dev/articles/how-to-evaluate-voice-agents","omniaEnterprise":false,"omniaEvidence":"https://promptarena.altairalabs.ai/arena/how-to/voice/setup-voice-testing/"},{"topic":"Runs and rolls out agents","omnia":"Yes.","caps":["progressive-rollout"],"them":"Not documented.","coverage":"undocumented","source":"https://www.braintrust.dev/docs/evaluate/score-online","omniaEnterprise":false,"omniaEvidence":"https://omnia.altairalabs.ai/tutorials/progressive-rollouts/"},{"topic":"Self-hosted","omnia":"Every edition.","caps":["workspaces"],"them":"Enterprise, hybrid.","coverage":"partly","source":"https://www.braintrust.dev/docs/guides/self-hosting","omniaEnterprise":false,"omniaEvidence":"https://omnia.altairalabs.ai/how-to/workspaces/manage-workspaces/"}],"faq":[{"q":"How is each priced?","a":"Braintrust charges by data processed and scores, with plans from free to Enterprise. Omnia is free while you build, the core is free in production, and the enterprise licence is per environment per year from £30,000, with nothing metered."}]}