Best Alternatives to RouteLLM

Open-source strong/weak model router from UC Berkeley LMSYS. Compare 10 similar free AI tools.

1. OpenRouter — Unified API gateway to 30+ free models (Free: 30+ free models; OpenAI-compatible)
2. Martian — Mechanistic interpretability routing — claims up to 98% cost savings; $9M backed (Free: Free tier available)
3. LiteLLM — Unified OpenAI-format interface for 100+ providers — proxy server (Free: Fully free; proxy server)
4. Helicone — One-line proxy — cost tracking, 95% cache savings, 100+ model providers (Free: Free self-host; 100K free cloud requests)
5. Ollama — Run 100+ LLMs locally from the terminal — completely free (Free: Free; 100+ models locally)
6. Unify.ai — Quality/cost/latency sliders — live benchmarks updated every 10 minutes (Free: $100 free credits)
7. Arize Phoenix — Open-source LLM observability — traces, evaluations, experiments, prompt tracking in a single dashboard (Free: Fully open source; self-hosted)
8. PricePerToken.com — Real-time LLM pricing across all providers — MCP server for Claude Code (Free: 100% free; MCP integration)
9. DeepSeek API — GPT-4 class at $0.27/M tokens (Free: Unlimited (rate-limited); $0.27/M tokens)
10. PyTorch — Dominant DL framework — ~87K stars (Free: BSD-3)

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