Braintrust vs LangWatch
Braintrust
braintrust.dev
LangWatch
langwatch.aiSide by side
| Figure | Braintrust | LangWatch |
|---|---|---|
| Price from | $249/mo | €29/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · Model Monitoring Software | 9.2 (#2) | 9.0 (#5) |
| Spec score · AI LLM Observability Tools | 9.2 (#2) | 9.1 (#4) |
| Spec score · AI Agent Observability Tools | 9.1 (#3) | 9.1 (#5) |
| Spec score · AI LLM Evaluation Tools | 9.2 (#3) | 9.1 (#6) |
| Spec score · AI Agent Evaluation Tools | 9.2 (#3) | 9.0 (#5) |
| Spec score · LLM Observability Tools | 9.2 (#3) | 9.0 (#6) |
| Spec score · Llm Monitoring | 9.0 (#4) | 8.9 (#7) |
| Company size | LinkedIn lists Braintrust as a privately held software-development company with 51–200 employees. | LinkedIn lists the company size as 11–50 employees. |
| Compliance | Braintrust states that it is SOC 2 Type II compliant and supports HIPAA safeguards and GDPR arrangements through DPAs and appropriate deployment choices. | LangWatch states ISO 27001 certification, GDPR compliance, EU data residency and SOC 2 coverage through AWS. |
| Deployment | Braintrust offers SaaS, bring-your-own-cloud and self-hosted deployment models. | LangWatch offers managed cloud, self-hosted, and hybrid deployment; its pricing page says self-hosting uses Docker Compose and the customer's ClickHouse. |
| Evaluations | Teams can run experiments against datasets and score outputs with language models, code or human reviewers. | The platform supports offline and online evaluations, CI/CD gates, multimodal scoring, built-in evaluators and custom workflows. |
| Headquarters | LinkedIn lists San Francisco as Braintrust's headquarters. | Amsterdam |
| Integrations | Braintrust describes its product as framework agnostic and lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more. | Official integrations cover OpenAI, Anthropic, Google Gemini, Bedrock, Azure OpenAI, Vertex AI, Groq, Ollama and LiteLLM. |
| Intended users | Braintrust says its platform is for teams running agents in production, from early-stage shipping through enterprise scale. | The company says the platform is for AI teams shipping agents and describes evaluation workflows for developers, product owners, QA, and domain experts. |
| Observability | The platform captures agent traces, prompts, responses and tool calls, with search across logs plus latency, cost and quality tracking. | Tracing captures nested agent spans, sessions, users, token usage, cost, topics and multimodal payloads. |
| Product | Braintrust describes itself as an active observability platform for AI agents that helps teams inspect production behavior and improve agent quality. | LangWatch describes itself as an AI agent engineering platform for helping teams ship reliable agents to production. |
| Rating on G2 | 4.3 out of 5 from 58 reviews | 0.0 out of 5 from 0 reviews |
| Security | Braintrust states that it is SOC 2 Type II certified and GDPR and HIPAA compliant, and offers SSO, RBAC, and hybrid deployment options. | The trust center states AES-256 encryption at rest, TLS 1.2+ in transit, AWS KMS, RBAC, MFA, SSO, encrypted backups and GDPR controls. |
| Support | The pricing page lists community support, priority support, and shared Slack channel support across its plans. | Developer users receive GitHub and Discord community support, while Growth includes private Slack or Teams support. |
| What it does | Braintrust is an observability and evaluation platform for instrumenting, understanding and improving AI agents in production. | LangWatch is an AI-agent engineering platform for testing, evaluating, observing, governing and improving agents across development and production. |
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.
LangWatch
LangWatch is an AI agent engineering platform for teams preparing agents for production. Simulations cover multi-turn conversations, tool use, recovery, and business outcomes before launch. Evaluations can run on datasets, production traffic, or in CI/CD workflows that gate merges. Traces show agent steps alongside cost, tokens, duration, errors, evaluations, and annotations. Integrations include Python and TypeScript SDKs, OpenTelemetry, REST ingestion, model providers, and frameworks such as LangGraph, LangChain, CrewAI, and DSPy. Voice-agent testing supports OpenAI Realtime, Gemini, ElevenLabs, Google Live API, Pipecat, WebSocket bots, and Twilio. Deployment options are managed cloud, self-hosted, and hybrid; self-hosting uses Docker Compose and the customer’s ClickHouse. LangWatch is open source under Apache 2.0. The Developer plan costs nothing and includes 50k events per month, 14-day data access, and two users. Growth costs €29 a month per core seat and includes 200k events. The trust center lists encryption, access controls, privacy features, and enterprise DPAs.