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GPT-5

OpenAI · GPT-5

Original GPT-5 release entry, now superseded by newer GPT-5.3 and GPT-5.4 generation variants.

Part of GPT family · Other versions: 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 , 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 March 27, 2026

Overview

Freshness note: Model capabilities, limits, and pricing can change quickly. This profile is a point-in-time snapshot last verified on March 27, 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 and recommend newer GPT-5.2-family or GPT-5.4 routes depending the workflow, so 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 The model is still available in the API, but it no longer represents the recommended current GPT-5 route.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-5.2 or GPT-5.4 depending the workload, with GPT-5.3 mainly relevant when you want the current ChatGPT conversational route.

Comparisons

  • GPT-5.2 (OpenAI): Current flagship GPT-5 family route in OpenAI’s API family guide.
  • GPT-5.4 (OpenAI): Current higher-capability successor in OpenAI’s frontier lineup.
  • GPT-5 mini (OpenAI): Lower-cost route for high-volume workloads.
  • Claude Sonnet 4.6 (Anthropic): Alternative default model for broad production tasks.