Inference provider · Inference gateway

Melious

Verified Aug 2026

Quick answer: Teams that want one OpenAI/Anthropic-compatible key for open-weight models routed only through EU infrastructure — especially when EU residency and per-response environmental impact matter more than a US-global mega-catalog.

Best for

Teams that want one OpenAI/Anthropic-compatible key for open-weight models routed only through EU infrastructure — especially when EU residency and per-response environmental impact matter more than a US-global mega-catalog.

Skip if

You need frontier Claude/GPT/Gemini proper (not open-weight mappings), US/APAC fallback routes, or the widest multi-lab aggregator mindshare (OpenRouter).

Who it fits

  • Teams that want one OpenAI/Anthropic-compatible key for open-weight models routed only through EU infrastructure — especially when EU residency and per-response environmental impact matter more than a US-global mega-catalog.
  • Builders who start in the browser without a local IDE setup
Experimental

Pros

EU-first open-weight inference gateway — OpenAI Chat Completions and Anthropic Messages on one key at `https://api.melious.ai/v1`; 60+ open-weight models (chat, image, embeddings, speech); routes across 11+ European providers in 8 countries with automatic failover and no US/APAC fallbacks; routing suffixes `:speed`, `:price`, `:eco` (balanced default); optional per-response `environment_impact` (energy/carbon/water/location); maps Claude/GPT/Gemini names to open models so unmodified clients keep working; vendor claims no training on customer data and EU/EEA jurisdiction (independently checked by staysin.eu).

Cons

Melious API key required — not your existing lab BYOK; open-weight only, so not a true Claude/GPT drop-in despite Anthropic SDK mapping; Hub adds tools (web search, URL crawler, code execution), vectors, and CLI beyond a pure inference key; younger vs OpenRouter with smaller Western agent-docs mindshare; sovereignty/residency claims are vendor + staysin.eu, not our audit; not hands-on verified here.

Facts

Locality:
Cloud-native
Surfaces:
Web
Maturity:
Experimental
BYOK:
Bring your own API key
Verified:
Aug 2026

Agent standards & memory

AGENTS.md: N/ASKILL.md: N/ARules / memory: Single Melious API key; OpenAI-compatible base URL `https://api.melious.ai/v1` (Anthropic Messages on same key).Start free, no credit card required (vendor claim); PAYG credits or subscription energy pools — see melious.ai/pricing.

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