Free LangSmith Alternatives in 2026

Looking for free alternatives to LangSmith? We've gathered 8 similar AI tools, including 8 with free or freemium plans, so you can compare no-cost options and find the right fit. Top free picks include SambaNova Cloud, Meta AI, Hugging Face.

Best Free LangSmith Alternatives

1. SambaNova Cloud (Freemium) (Free option) More LangSmith alternatives
2. Meta AI (Free) (Free option) — Meta's AI assistant powered by Llama More LangSmith alternatives
3. Hugging Face (Freemium) (Free option) — The GitHub of AI — models, datasets, and spaces More LangSmith alternatives
4. Qwen2.5-VL (Free) (Free option) More LangSmith alternatives
5. Together AI (Freemium) (Free option) — Fast and affordable AI model inference API More LangSmith alternatives
6. Portkey AI (Freemium) (Free option) — AI gateway for managing LLM reliability, routing, and observability. More LangSmith alternatives
7. Cerebras Inference (Freemium) (Free option) More LangSmith alternatives
8. Braintrust (Freemium) (Free option) — AI evaluation and prompt management platform More LangSmith alternatives

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