GPT-5.4 Nano
openai/gpt-5.4-nano-20260317
OpenAI’s GPT-5.4 Nano, released on 2026‑03‑17, accepts file, image, and text inputs and produces text output. It supports tool use and reasoning, offers a context length of 400 000 tokens, and is not provided as open weights. Pricing is $0.20 per million input tokens and $1.25 per million output tokens.
- tool use
- structured outputs
- reasoning
At a glance
provideropenai
releasedMar 17, 2026
context400K
input / M$0.20
Specifications
What the API gives you
- Context window
- 400K tokens
- Max output
- 128K tokens
- Input price
- $0.20 / 1M tokens
- Output price
- $1.25 / 1M tokens
- Cache read
- $0.020 / 1M tokens
- Modalities
- file, image, text → text
- Knowledge cutoff
- Aug 31, 2025
- Released
- Mar 17, 2026
Recommendation coverage
Where this model appears
Not currently included in a published recommendation. This means the available task-specific evidence did not support a ranking yet—not that the model was reviewed and rejected.
Measured evidence
Public benchmark record
- LMArena Text
- 1482 Elo2026-07-20
- LMArena Vision
- 1201 Elo2026-07-12
LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.