InfiBench vs LangSmith

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	InfiBench Evaluation	LangSmith Evaluation
Tagline	Stack Overflow-derived benchmark for evaluating code LLMs on real-world programming questions.	LangChain's eval + observability platform.
Category	Evaluation	Evaluation
Pricing	Free· Free and open source (CC BY-SA 4.0)	Freemium· Free starter; Plus $39/mo per seat
Model	—	Platform (any LLM)
Editorial score	—	8.7 / 10
Use cases	code-llm-evalmodel-benchmarkingleaderboard-comparisonresearch	LLM tracingevalsLangChain integration
Pros	234 real Stack Overflow questions across 15 languages, not synthetic toy prompts Four complementary metrics handle free-form answers better than pass@k alone Public leaderboard with 100+ evaluated models for direct comparison Peer-reviewed at NeurIPS 2024 Datasets and Benchmarks Track	Tight LangChain integration Strong tracing UX Mature dataset/eval flows Reasonable per-seat pricing
Cons	Linux-only harness with Hugging Face Transformers format requirement Static 234-question set risks contamination as it ages Research artifact, not a polished product — setup expects ML engineering comfort	Best value if you're on LangChain UI can feel dense
Website	infi-coder.github.io	www.langchain.com

Pick InfiBench if

✅ 234 real Stack Overflow questions across 15 languages, not synthetic toy prompts
✅ Four complementary metrics handle free-form answers better than pass@k alone
✅ Public leaderboard with 100+ evaluated models for direct comparison
✅ Peer-reviewed at NeurIPS 2024 Datasets and Benchmarks Track

Pick LangSmith if