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LLM Observability

Braintrust

$$$ Premiumfrom $249/mo · Last reviewed August 2026

Braintrust is an evaluation-first platform for teams shipping AI products, centered on systematic evals with datasets and scoring functions. Side-by-side experiment comparison connects logging, tracing, and a prompt playground to the same data. The platform bills on processed data volume rather than seats; a free Starter plan includes a monthly data and scoring allowance, and the flat-priced Pro plan raises the limits. Enterprise plans add self-hosting, SSO, and compliance features. It is a proprietary hosted product used by AI-native product teams.

evalsllm-tracingprompt-management

Overview

Founded
2023
Pricing tier
High
Startup-friendly
Yes
Enterprise-ready
Yes

LLM observability

Request tracing
Yes
Quality evals
Yes
Prompt management
Yes
LLM gateway
No
Open-source
No
Self-hostable
Yes
Free tier
Yes: Starter plan: 1 GB processed data, 10k scores/mo

Categories & compliance

Categories

Attributes are sourced facts; rankings are derived from them by a transparent scoring engine. “Verified” is a vendor-claimed badge and has no effect on ranking.