Braintrust vs Evidently AI
Braintrust
braintrust.dev
Evidently AI
evidentlyai.comSide by side
| Figure | Braintrust | Evidently AI |
|---|---|---|
| Price from | $249/mo | $80/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 4 | 5 |
| Spec score · Model Monitoring Software | 9.2 (#2) | 9.3 (#1) |
| Spec score · AI LLM Evaluation Tools | 9.2 (#3) | 9.3 (#2) |
| Spec score · LLM Observability Tools | 9.2 (#3) | 9.3 (#2) |
| Documentation depth | The documentation is organized into guides, integrations, SDKs, API reference, cookbook, troubleshooting, changelog and administration sections. | The documentation includes getting-started guides, metric catalogs, cookbook examples, evaluation guides, FAQs and a changelog. |
| Integrations | Braintrust describes its product as framework agnostic and lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more. | Documented integration examples cover Jupyter and Colab, Streamlit, MLflow, DVCLive, Airflow, Metaflow, FastAPI, PostgreSQL, Prefect, Grafana, Prometheus and AWS SES. |
| Rating on G2 | 4.3 out of 5 from 58 reviews | 5.0 out of 5 from 1 review |
| Support | The pricing page lists community support, priority support, and shared Slack channel support across its plans. | Community support is provided through Discord, GitHub issue reporting, documentation, courses and direct email contact. |
| Tracing | The platform lets users inspect agent traces and tool calls and track latency, cost, and quality in real time. | Open-source tracing records inputs, outputs, intermediate events and function calls, and allows traces to be exported as tabular datasets. |
| What it does | Braintrust is an observability and evaluation platform for instrumenting, understanding and improving AI agents in production. | Evidently evaluates, tests and monitors LLM applications, RAG systems, AI agents and predictive machine-learning models. |
Plans
Evidently AI
- DeveloperFree
- Open-sourceFree
- Pro$80 a month
- EnterprisePriced on request
- StartupsPriced on request
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.
Evidently AI
Evidently AI evaluates, tests, and monitors LLMs, RAG applications, AI agents, and machine-learning models. Its open-source Python framework is licensed under Apache 2.0 and provides more than 100 evaluation metrics. Automated evaluations measure output quality, safety, and reliability, can run in pipelines, and produce visual reports. The platform includes tracing, storage for application data and evaluation runs, test-dataset management, and dashboards. Teams can generate realistic, edge-case, or adversarial inputs tailored to a use case. Live monitoring tracks quality checks and can surface drift, regressions, and emerging risks. Red-team testing targets jailbreaks, prompt injections, data leaks, harmful content, and prompt leakage. Predictive ML workflows include performance, drift, and data-quality metrics. Evidently Cloud can send alerts to Slack, Discord, and email. Open-source support is through Discord and documentation; Pro includes email support. The Developer plan is free and limited to 10,000 rows per month, 1GB of snapshots, 3 projects, and 2 seats. Pro costs $80 a month, with additional rows and storage charged separately.