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GPT-5

OpenAI · GPT-5

Original GPT-5 release entry, now superseded in OpenAI guidance by GPT-5.5 and newer GPT-5.4 generation variants.

Part of GPT family · Other versions: GPT-5.6 Luna , GPT-5.6 Terra , GPT-5.6 Sol , GPT-5.5 Pro , GPT-5.5 , GPT-Rosalind , GPT-5.4 mini , GPT-5.4 nano , GPT-5.4 Pro , GPT-5.4 , GPT-5.3 , GPT-5.3-Codex , GPT-5.2-Codex , GPT-5.2 Pro , GPT-5.2 , GPT-5-Codex , GPT-5 mini , GPT-5 nano , GPT-4.1 , GPT-4o mini Transcribe , GPT-4o mini TTS , GPT-4o Transcribe , Computer Use Preview , GPT-4o mini , GPT-4o
Type
language
Context
400K tokens
Max Output
128K tokens
Status
legacy
Input
$1.25/1M tok
Output
$10/1M tok
API Access
Yes
License
proprietary
reasoning coding agentic tool-use long-context instruction-following
Released August 2025 · Updated June 8, 2026

Overview

Freshness note: Model capabilities, limits, and pricing can change quickly. This profile is a point-in-time snapshot last verified on June 8, 2026.

GPT-5 represents the original release entry for the GPT-5 generation. OpenAI’s current model docs now explicitly describe it as the previous intelligent reasoning model for coding, reasoning, and agentic tasks, and recommend using the latest GPT-5.5. This page is best treated as historical context and migration reference.

Capabilities

GPT-5 established the baseline for the generation with strong reasoning, coding, structured output behavior, image input, and long-context operation.

Technical Details

OpenAI’s current model card still lists GPT-5 with a 400K context window, 128K max output, image input support, and configurable reasoning effort. The model is still available in the API, but it no longer represents the recommended current GPT route.

Pricing & Access

Current published API pricing for this older tier remains:

  • Input: $1.25 per 1M tokens
  • Output: $10.00 per 1M tokens

OpenAI’s pricing docs also list a cached input rate of $0.125 per 1M tokens.

Best Use Cases

This entry is best treated as historical context for the GPT-5 generation baseline. For new deployments, prefer GPT-5.5 for the newest frontier OpenAI route, GPT-5.4 for compatibility with the March 2026 premium API lane, or GPT-5.4 mini/nano for cost-sensitive high-volume work.

Comparisons

  • GPT-5.5 (OpenAI): Newest OpenAI frontier route for coding, reasoning, and agentic tasks.
  • GPT-5.4 (OpenAI): Current GPT-5.4 premium route for teams keeping compatibility with that API lane.
  • GPT-5.4 mini (OpenAI): Better current starting point for most new low-latency, high-volume OpenAI workloads.
  • Claude Sonnet 4.6 (Anthropic): Alternative default model for broad production tasks.