Best alternatives to Weights & Biases (2026)
15 verified developer tools alternatives to Weights & Biases, machine-checked for live status, real pricing, and genuine free tiers.
| Tool | Free tier | API | Freshness | Key difference |
|---|---|---|---|---|
| SpeakeasyFreemium | ✓ | ✓ | 100 | Verified free tier |
| SoftrFreemium | ✓ | ✓ | 100 | Verified free tier |
| ContinueOpen source | — | — | 100 | Open source |
| LocofyFreemium | — | — | 100 | No public API |
| LangSmithFreemium | — | ✓ | 100 | Debug & evaluate LLM apps. |
| Stack AIFreemium | — | ✓ | 100 | No-code AI agent builder. |
| LlamaIndexOpen source | — | ✓ | 100 | Open source |
| E2BUsage-based | — | ✓ | 100 | Open source |
| Hotpot.aiFreemium | — | ✓ | 100 | AI image tools & API. |
| Hugging FaceFreemium | — | ✓ | 100 | Open source |
| BriaFreemium | — | ✓ | 100 | Licensed generative image API. |
| WarpFreemium | — | — | 100 | No public API |
| LiteLLMOpen source | — | ✓ | 100 | Open source |
| HumanloopFreemium | ✓ | ✓ | 100 | Verified free tier |
| AnimaFreemium | ✓ | — | 100 | Verified free tier |