LangSmith vs Portkey
LangSmith
langchain.comPortkey
portkey.aiSide by side
| Figure | LangSmith | Portkey |
|---|---|---|
| Price from | $39/mo | $49/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 3 |
| Spec score · Llm Developer Tools | 9.0 (#3) | 8.0 (#12) |
| Spec score · AI LLM Observability Tools | 9.1 (#3) | 8.0 (#17) |
| Spec score · Llm Monitoring | 8.9 (#6) | 7.9 (#16) |
| Deployment | Deployment provides managed or self-hosted agent servers with streaming, cron scheduling, authentication, MCP support and more than 30 API endpoints. | Portkey lists self-hosted and local deployment options, and Enterprise offers private cloud deployment and VPC hosting. |
| Founded | 2023 | 2023 |
| Headquarters | San Francisco, California, United States | San Francisco, California |
| Integrations | Documented integrations cover OpenAI, Anthropic, Bedrock, Gemini, Mistral, LiteLLM, OpenTelemetry, CrewAI, Vercel AI SDK, PydanticAI, AutoGen and many other frameworks and providers. | The integrations catalog lists providers and platforms including OpenAI, Anthropic, Google Gemini, Azure, Amazon Bedrock, and Ollama. |
| Observability | Its observability features include agent tracing, cost tracking, online LLM-as-judge and code evaluations, trajectory monitoring, and webhook or PagerDuty alerts. | Portkey offers logs, traces, feedback, metadata, filters, and alerts for AI activity. |
| Security | LangSmith's trust center lists SOC 2 Type II, ISO 27001:2022, GDPR and HIPAA compliance. | Security features include virtual provider keys, access controls, inbound IP and geographic rules, and sensitive-data redaction. |
| Support | The Developer plan includes community support, and the Enterprise plan lists a support SLA. | The Free plan lists community support, Production lists production support, and Enterprise lists dedicated onboarding and priority support. |
Plans
In their own words
LangSmith
LangSmith is a commercial agent-engineering platform for building, evaluating, deploying, monitoring, and improving AI agents. It supports offline evaluations on curated datasets and real-time scoring of production interactions. Evaluation methods include human review, heuristic checks, LLM-as-judge evaluators, pairwise comparisons, and custom Python or TypeScript evaluators. Annotation queues route runs to subject-matter experts for feedback that can calibrate evaluations, improve prompts, or augment datasets. The Playground compares prompt versions or model providers, and LangSmith chat can auto-improve prompts. Observability includes agent and retrieval tracing, token and general cost tracking, trajectory monitoring, online evaluations, and webhook or PagerDuty alerts. Traces can arrive through SDKs or an API from LangGraph, custom Python, or other stacks; SDKs are listed for Python, TypeScript, Go, and Java. Hosting ranges from cloud to hybrid and self-hosted Enterprise options. The Developer plan costs nothing, Plus costs $39 a month, and Enterprise pricing is custom.
Portkey
Portkey is a platform for managing, observing, and governing generative AI across teams. Its gateway offers a unified API for models and providers across modalities, with configurable routing, failovers, retries, and load balancing. Monitoring tools include logs, traces, feedback, metadata, filters, and alerts; prompt management adds templates, a playground, API endpoints, versioning, and variables. Listed integrations include OpenAI, Anthropic, Google Gemini, Azure, Amazon Bedrock, and Ollama, as well as agent frameworks including CrewAI, LangChain, LangGraph, and the OpenAI Agents SDK. The gateway offers simple and semantic caching for repeat requests. Security features include virtual provider keys, access controls, inbound IP and geographic rules, and sensitive-data redaction. Self-hosted and local deployment options are listed, while Enterprise adds private cloud deployment and VPC hosting. Developer is free and includes 10k recorded logs/month, 3 days log retention, and 30 days metrics retention. Production costs $49 a month, billed $49/month, with 100k recorded logs/month and production support. Enterprise pricing is custom. Portkey lists San Francisco as its headquarters and March 2023 as its launch date.