Key Specifications
Parameters
-
Context
400.0K
Release Date
August 7, 2025
Average Score
50.1%
Timeline
Key dates in the model's history
Announcement
August 7, 2025
Today
March 26, 2026
Technical Specifications
Parameters
-
Training Tokens
-
Knowledge Cutoff
May 30, 2024
Family
-
Capabilities
MultimodalZeroEval
Pricing & Availability
Input (per 1M tokens)
$0.05
Output (per 1M tokens)
$0.40
Max Input Tokens
400.0K
Max Output Tokens
128.0K
Supported Features
Function CallingStructured OutputCode ExecutionWeb SearchBatch InferenceFine-tuning
Benchmark Results
Model performance metrics across various tests and benchmarks
Reasoning
Logical reasoning and analysis
GPQA
GPT-5 nano - Diamond thinking without tools This method uses mode thinking Diamond for solutions complex tasks without use tools. Diamond thinking represents itself structured approach to and solving problems, where model: 1. task on parts 2. various solutions 3. works over each step 4. results, in order to errors GPT-5 nano demonstrates abilities reasoning in this mode, especially for mathematical tasks and logical puzzles. Model can its approach, errors and its thinking by In tests on complex mathematical tasks from AIME and FrontierMath, this method improvement by comparison with approach without thinking. Especially efficient for tasks, requiring reasoning and analysis • Self-reported
Other Tests
Specialized benchmarks
AIME 2025
GPT-5 nano with included mode thinking (without tools) - mathematics • Self-reported
FrontierMath
GPT-5 nano with included mode thinking (only with Python-tool) - FrontierMath levels 1-3 mathematics expert level. • Self-reported
Humanity's Last Exam
GPT-5 nano with mode thinking (without tools) - set questions expert level by various subjects • Self-reported
HMMT 2025
GPT-5 nano with included mode thinking (without tools) - Harvard-MIT Mathematics Tournament. • Self-reported
License & Metadata
License
proprietary
Announcement Date
August 7, 2025
Last Updated
July 24, 2025
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