OpenAI: GPT-5.4 Nano
Chatopenai/gpt-5.4-nanoGPT-5.4 Nano is the lightest and most cost-efficient member of the GPT-5.4 family ($0.20/M input, $1.25/M output), optimized for speed-critical, high-volume tasks such as classification, data extraction, ranking, and sub-agent execution. It accepts text and image input and supports reasoning, tool use (function calling), prompt caching, and web search. Context: 400K tokens, output: 128K. Available via OpenAI and Anthropic protocols.
Providers
/v1/chat/completions/v1/responsesCode Examples
from openai import OpenAIclient = OpenAI(base_url="https://api.ofox.run/v1",api_key="YOUR_OFOX_API_KEY",)response = client.chat.completions.create(model="openai/gpt-5.4-nano",messages=[{"role": "user", "content": "Hello!"}],)print(response.choices[0].message.content)
Uptime & Status
Benchmarks
OpenAI: GPT-5.4 Nano scores 1404 in the Overall category of the LMArena text leaderboard (style control), ranking #121 of 374 models based on 53,078 human preference votes (updated 2026-07-12).
| Category | Arena Score | 95% CI | Rank | Votes |
|---|---|---|---|---|
| Overall | 1404 | 1400–1408 | #121 of 374 | 53,078 |
| Hard Prompts | 1423 | 1419–1428 | #119 of 374 | 34,785 |
| Coding | 1461 | 1455–1468 | #102 of 369 | 14,887 |
| Math | 1427 | 1415–1439 | #84 of 362 | 2,801 |
| Creative Writing | 1337 | 1329–1345 | #159 of 372 | 8,601 |
| Instruction Following | 1388 | 1382–1394 | #127 of 374 | 17,846 |
| Chinese | 1422 | 1409–1435 | #130 of 344 | 2,723 |
Source: LMArena · CC BY 4.0 · Updated 2026-07-12 · Methodology ↗ · Ranks compare models within each category of the LMArena text leaderboard (style control). Scores come from third-party human preference evaluations, not from OFOX.