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.
Pricing
Ratings
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
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