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GPT-5.4 Thinking

OpenAI's most capable reasoning model as of March 2026. GPT-5.4 Thinking combines frontier-level reasoning with a 1M token context window, built-in computer-use capabilities, and the ability to intervene mid-response. It delivers 33% fewer false claims and 18% fewer error-containing responses compared to GPT-5.2, with major improvements in coding, document understanding, agentic workflows, and multimodal tasks.

5.0/ 5.0
1000K context
Try GPT-5.4

Pricing

$200/month
Pro plan
API Pricing
Input$2.5/1M tokens
Output$15/1M tokens

Ratings

Overall
5.0
Coding
4.8
Writing
4.6
Reasoning
5.0
Speed
3.9
Value
4.3

Pros

  • 1M token context window — largest from OpenAI
  • 33% fewer false claims vs GPT-5.2
  • Built-in computer-use capabilities
  • Intervene mid-response during reasoning
  • 6x cheaper input tokens than GPT-5.2 Thinking
  • Excellent for coding, agentic workflows, and document analysis

Cons

  • Requires Pro subscription ($200/mo) for full access
  • Slower than non-thinking variants
  • Can be overkill for simple tasks
  • Writing still not as natural as Claude

Best For

Complex reasoning, agentic coding, long-document analysis, multi-step workflows

Quick Info

Provider
OpenAI
Version
5.4
Released
Mar 2026
Context
1000K tokens

Features

Vision/Images
Audio
Video
PDF Processing
Code Generation
AI Agents

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