Braintrust vs Kosmoy AI Observability
Braintrust
braintrust.devKosmoy AI Observability
kosmoy.comSide by side
| Figure | Braintrust | Kosmoy AI Observability |
|---|---|---|
| Price from | $249/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 4 | 1 |
| Spec score · AI Agent Observability Tools | 9.1 (#3) | 7.2 (#29) |
| Deployment | Braintrust offers SaaS, bring-your-own-cloud and self-hosted deployment models. | Kosmoy is single-tenant software deployed in the customer's Kubernetes environment, including cloud, on-premises and air-gapped deployments. |
| Headquarters | LinkedIn lists San Francisco as Braintrust's headquarters. | Milan, Italy |
| Integrations | Braintrust describes its product as framework agnostic and lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more. | The platform page lists integrations including OpenAI, Anthropic, Google, Azure AI Foundry, AWS Bedrock, MCP servers, A2A peers, Snowflake, Databricks, Pinecone and Weaviate. |
| Support | The pricing page lists community support, priority support, and shared Slack channel support across its plans. | Pricing proposals specify support coverage, architecture reviews, enablement and service-level requirements. |
Plans
In their own words
Braintrust
Braintrust is an observability platform for teams running AI agents in production. It lets teams inspect agent traces and tool calls while tracking latency, cost, and quality in real time. Users can evaluate datasets, compare prompts and models, and score outputs with LLMs, code, or human reviewers. Discovery tools surface patterns in production traces to help investigate agent behavior, and the Loop agent can run evaluations, generate test cases, and iterate on prompts autonomously. Braintrust lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more, and its MCP server lets coding agents query logs, run evaluations, and update prompts from an IDE. Security options listed include SSO, RBAC, and hybrid deployment; Braintrust states that it is SOC 2 Type II certified and GDPR and HIPAA compliant. Starter is free, with 1 GB processed data, 10,000 scores, and 14-day retention. Pro costs $249.00 per month; Enterprise pricing is custom.
Kosmoy AI Observability
Kosmoy AI Observability has no write-up on Specifiction yet; its figures are above.