opik alternatives

comet-ml/opik (23k stars, +56 this week): Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations… Why it matters: useful plumbing for shipping LLM-powered features.

Below are 12 other LLM tooling repos tracked by OSS Radar that share at least two GitHub topics with opik, ordered by how many topics overlap, then by stars gained in the last 7 days. Topic overlap means a similar problem space, not a drop-in replacement, so check each project's README.

1. 1. langfuse/langfuse

   +112/wkest.

   🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform. Why it matters: useful plumbing for shipping LLM-powered features.

   36k stars · TypeScript · shared topics: evaluation, langchain, llama-index, llm, llm-evaluation, llm-observability, llmops, open-source, openai, playground, prompt-engineering

2. 2. promptfoo/promptfoo

   +63/wkest.

   Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Why it matters: useful plumbing for shipping LLM-powered features.

   26k stars · TypeScript · shared topics: evaluation, llm, llm-evaluation, llmops, prompt-engineering

3. 3. headroomlabs-ai/headroom

   +315/wkest.

   Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. Why it matters: useful plumbing for shipping LLM-powered features.

   75k stars · Python · shared topics: langchain, llm, openai, prompt-engineering

4. 4. BerriAI/litellm

   +210/wkest.

   The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails… Why it matters: useful plumbing for shipping LLM-powered features.

   61k stars · Python · shared topics: langchain, llm, llmops, openai

5. 5. f/prompts.chat

   +203/wkest.

   f.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Why it matters: useful plumbing for shipping LLM-powered features.

   173k stars · HTML · shared topics: llm, open-source, openai, prompt-engineering

6. 6. langchain-ai/langchain

   +182/wkest.

   The agent engineering platform. Why it matters: useful plumbing for shipping LLM-powered features.

   148k stars · Python · shared topics: langchain, llm, open-source, openai

7. 7. langchain-ai/langgraph

   +140/wkest.

   Build resilient agents. Why it matters: useful plumbing for shipping LLM-powered features.

   43k stars · Python · shared topics: langchain, llm, open-source, openai

8. 8. Tencent/WeKnora

   +679/wkest.

   Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki. Why it matters: useful plumbing for shipping LLM-powered features.

   34k stars · Go · shared topics: evaluation, llm, openai

9. 9. trailhq/Trail-Code

   +133/wkest.

   Turbocharge Claude Code, Cursor, Codex, Gemini & every coding agent: faster, cheaper, with contextual understanding specific to your… Why it matters: useful plumbing for shipping LLM-powered features.

   10k stars · TypeScript · shared topics: llm, open-source, openai

10. 10. asgeirtj/system_prompts_leaks

    +91/wkest.

    Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Why it matters: useful plumbing for shipping LLM-powered features.

    70k stars · Python · shared topics: llm, openai, prompt-engineering

11. 11. DietrichGebert/ponytail

    +1.7k/wkest.

    Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote. Why it matters: useful plumbing for shipping LLM-powered features.

    163k stars · JavaScript · shared topics: llm, prompt-engineering

12. 12. lyogavin/airllm

    +1.4k/wkest.

    AirLLM 2.8T LLM inference with single 4GB GPU. Why it matters: useful plumbing for shipping LLM-powered features.

    38k stars · Jupyter Notebook · shared topics: llm, open-source

More: all trending LLM tooling repos · compare opik with the top 2