openai/gpt-5.4-nanoGPT-5.4 Nano is OpenAI’s proprietary AI model, released Mar 17, 2026. It scores 146 on the Epoch Capabilities Index, costs $0.20/M input and $1.25/M output tokens, and handles a 400K-token context window.
GPT-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
Frontier of human expert knowledge
Factual accuracy & hallucination
Novel ML problem-solving
Scientific research coding
Olympiad-qualifier math
Research-level math problems
Hardest research math
Multi-step agentic tasks
Tool-agent-user reliability
GPT-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.
GPT-5.4 Nano is an AI model developed by OpenAI, part of the GPT family, released Mar 17, 2026.
GPT-5.4 Nano's list price from OpenAI is $0.20 per million input tokens and $1.25 per million output tokens.
GPT-5.4 Nano supports a context window of up to 400K tokens.
On standardized evaluations tracked by Epoch AI, GPT-5.4 Nano scores 47.2% on SciCode, 28.3% on Humanity's Last Exam, 6.3% on FrontierMath Tier 4.
GPT-5.4 Nano is a proprietary model (API access), available through its provider's API rather than as a downloadable open-weight model.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Nov 12, 2026.