StackRank

Models & APIs

The model providers and gateways that power the AI features in your app.

Editorial ranking · Updated Nov 2, 2026 · Not sponsored

  1. 1
    Anthropic API (Claude)

    Claude models via API

    Why it ranks · Top-tier coding and tool-use models

    PaidCoding and agentic tasks

  2. 2
    OpenAI API

    GPT and reasoning models, images, audio via API

    Why it ranks · Broadest model and feature lineup

    PaidGeneral-purpose AI features

  3. 3
    Google Gemini API

    Gemini models via Google AI Studio

    Why it ranks · Generous free tier and huge context

    FreeLong context and a generous free tier

  4. 4
    OpenRouter

    One API for hundreds of models

    FreeSwitching between models

  5. 5
    Groq

    Ultra-fast inference for open models

    FreeLow-latency apps

  6. 6
    Mistral AI

    European open and commercial models via API

    FreeOpen-weight / EU hosting needs