openai/gpt-5.4-nanoGPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks.
Scores on standardized evaluations. Higher is better — and rank shows where GPT-5.4 Nano lands among all models tracked on Model Beat.
Abstract visual reasoning
Harder abstract reasoning
Graduate-level scientific reasoning
Factual accuracy & hallucination
Novel ML problem-solving
Olympiad-qualifier math
Research-level math problems
Hardest research math
Multi-step agentic tasks
Model & benchmark data from Epoch AI (CC BY); pricing, specs & descriptions from OpenRouter.