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GPT-5

OpenAIUnited StatesOpen + closedProprietaryproprietarytext · vision

Frontier reasoning flagship.

Release history (9)

  1. GPT-5.5 Instant
    stableMay 5, 2026
    gpt-5.5-instant

    Default ChatGPT model.

  2. GPT-5.5
    Current stableCutting edgestableApr 23, 2026
    gpt-5.5

    Frontier flagship — agentic, multi-step, tool-using workflows.

  3. GPT-5.4 mini
    deprecatedMar 17, 2026
    gpt-5.4-mini
  4. GPT-5.4 nano
    deprecatedMar 17, 2026
    gpt-5.4-nano
  5. GPT-5.4
    deprecatedMar 5, 2026
    gpt-5.4

    Thinking + Pro variants.

  6. GPT-5.2
    deprecatedDec 11, 2025
    gpt-5.2

    Late 2025 refresh.

  7. GPT-5
    stableAug 7, 2025
    gpt-5

    Frontier reasoning flagship.

  8. GPT-5 nano
    stableAug 7, 2025
    gpt-5-nano

    Cheapest 5 tier.

  9. GPT-5 mini
    stableAug 7, 2025
    gpt-5-mini

    Faster 5 tier.

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