OpenAI launches GPT-5.4 with Thinking and Pro versions
OpenAI's new model for professional work offers up to 1 million tokens of context and fewer errors than GPT-5.2.
What's new?
OpenAI released GPT-5.4 on March 5, calling it "our most capable and efficient frontier model for professional work." It comes in three versions:
- GPT-5.4
- GPT-5.4 Thinking
- GPT-5.4 Pro
By the numbers
- Context: up to 1 million tokens in the API.
- GDPval: 83%.
- Record scores on OSWorld-Verified and WebArena Verified.
- Top of Mercor's APEX-Agents leaderboard.
Fewer errors
According to OpenAI, compared with GPT-5.2:
- 33% less likely to make errors in individual claims.
- 18% fewer responses containing any errors.
Tool Search
A new Tool Search system lets API models look up tool definitions only when they need them.
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