Kopern vs LangSmith
Kopern
kopern.ai
LangSmith
langchain.comSide by side
| Figure | Kopern | LangSmith |
|---|---|---|
| Price from | $79/mo | $39/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 3 |
| Spec score · AI Agent Platforms | 8.1 (#29) | 9.0 (#4) |
| Integrations | The site lists WhatsApp, Telegram, Slack, GitHub, webhooks, MCP, and an embeddable chat widget among its connectors. | Documented integrations cover OpenAI, Anthropic, Bedrock, Gemini, Mistral, LiteLLM, OpenTelemetry, CrewAI, Vercel AI SDK, PydanticAI, AutoGen and many other frameworks and providers. |
| Monitoring | The workflow quality monitor supports regression testing and Slack or email alerts when quality drops below a configured threshold. | Monitoring dashboards track token usage, latency percentiles, error rates, cost and feedback scores, with webhook and PagerDuty alerts. |
| Security | The homepage lists owner-only Firestore rules, hashed API keys, server-side key management, and sandboxed execution as security measures. | LangSmith's trust center lists SOC 2 Type II, ISO 27001:2022, GDPR and HIPAA compliance. |
| Support | The pricing page lists Community support for Starter, Priority email support for Pro, Email support for Usage, and Dedicated + SLA support for Enterprise. | The Developer plan includes community support, and the Enterprise plan lists a support SLA. |
Plans
In their own words
Kopern
Kopern is a no-code AI agent builder for configuring, testing, grading, deploying, and monitoring agents through web and API access. Agents can combine system prompts, skills, tools, extensions, and multiple models. Grading checks output matching, schemas, tool use, safety, and LLM judgments. The Optimization Lab includes prompt tuning, automated fixes, adversarial testing, model tournaments, evolution, and distillation. Connectors include WhatsApp, Telegram, Slack, GitHub, webhooks, MCP, and an embeddable chat widget; workflow orchestration connects to n8n, Zapier, and Make. Monitoring supports regression tests and Slack or email alerts when quality falls below a threshold. Authenticated endpoints include an OpenAI-compatible chat-completions API. Kopern lists human approvals, web browsing, security controls, and compliance badges. Plans range from free Starter to Pro at $79 a month and Enterprise at $499 a month; Usage is pay per use with no listed plan price.
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.