LangWatch
8.2#4 in ai agent observability toolsFrom €29 a monthFree planWebAPILinuxmacOS
VisitLangWatch vs Respan (formerly Keywords AI)
Respan (formerly Keywords AI)
6.7#21 in ai agent observability toolsFrom $199 a yearFree planWebAPISelf-hosted
VisitWhat both publish
| Fact | LangWatch | Respan (formerly Keywords AI) |
|---|---|---|
| Evaluations | The platform supports offline and online evaluations, CI/CD gates, multimodal scoring, built-in evaluators and custom workflows. | Evaluators can combine LLM judges, deterministic code checks, and human review, and can score sampled production traffic. |
| Integrations | Official integrations cover OpenAI, Anthropic, Google Gemini, Bedrock, Azure OpenAI, Vertex AI, Groq, Ollama and LiteLLM. | The integrations directory lists 171 integrations, including OpenTelemetry, LangChain, OpenAI, Anthropic, AWS Bedrock, Slack, and PostHog. |
| Intended users | The company says the platform is for AI teams shipping agents and describes evaluation workflows for developers, product owners, QA, and domain experts. | The About page says Respan helps teams trace workflows, evaluate agent behavior, and improve quality in production, and that startups and enterprise teams use it. |
| Product | LangWatch describes itself as an AI agent engineering platform for helping teams ship reliable agents to production. | Respan describes itself as an AI gateway with built-in observability, evaluations, and security testing. |
| Support | Developer users receive GitHub and Discord community support, while Growth includes private Slack or Teams support. | The pricing page lists Community Discord for Free, email support for Team, and a dedicated support engineer for Enterprise. |
LangWatch plans
- DeveloperFree
- Growth€29 a month
- EnterprisePriced on request
Respan (formerly Keywords AI) plans
- FreeFree
- Team$199 a year
- EnterprisePriced on request
Pick LangWatch if…
LangWatch suits AI teams shipping agents, including developers, product owners, QA, and domain experts working on evaluation workflows. Teams can choose managed cloud, self-hosted, or hybrid deployment.
Pick Respan (formerly Keywords AI) if…
Respan suits startup and enterprise teams that need to trace AI workflows, assess agent behavior, or monitor quality in production. Its listed self-hosted deployment and enterprise security options may suit teams with those requirements.