GPT-5 Mini
Chatopenai/gpt-5-miniGPT-5 Mini is OpenAI's cost-effective GPT-5 variant, released on 2025-08-07 and tuned for balanced everyday performance at a fraction of the flagship price. It supports vision, audio input, tool use (function calling), and prompt caching, covering most general-purpose workloads: images and recordings can be passed in directly, while prompt caching keeps repeated system prompts inexpensive across turns. Context: 256K tokens, output: 32K. Accessible via the OpenAI-compatible protocol.
Providers
/v1/chat/completions/v1/responsesCode Examples
from openai import OpenAIclient = OpenAI(base_url="https://api.ofox.io/v1",api_key="YOUR_OFOX_API_KEY",)response = client.chat.completions.create(model="openai/gpt-5-mini",messages=[{"role": "user", "content": "Hello!"}],)print(response.choices[0].message.content)
Benchmarks
GPT-5 Mini scores 1390 in the Overall category of the LMArena text leaderboard (style control), ranking #138 of 374 models based on 27,006 human preference votes (updated 2026-07-12).
| Category | Arena Score | 95% CI | Rank | Votes |
|---|---|---|---|---|
| Overall | 1390 | 1385–1395 | #138 of 374 | 27,006 |
| Hard Prompts | 1403 | 1397–1409 | #146 of 374 | 12,804 |
| Coding | 1430 | 1422–1439 | #148 of 369 | 5,495 |
| Math | 1405 | 1390–1421 | #116 of 362 | 1,458 |
| Creative Writing | 1325 | 1315–1336 | #171 of 372 | 3,557 |
| Instruction Following | 1374 | 1367–1382 | #146 of 374 | 6,920 |
| Chinese | 1408 | 1391–1425 | #141 of 344 | 1,343 |
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.