OpenAI17:09Feature UpdatesOfficial Blog
OpenAI Launches GPT-5.4 Mini & Nano Fast Small Models
Accelerates coding & agents at low cost
Key Points
- 1Mini: $0.75/1M in, $4.50/1M out
- 2Nano: $0.20/1M in, $1.25/1M out - cheapest
- 32x faster, 54.4% SWE-Bench
- 4Free ChatGPT users access mini
OpenAI introduced its most capable small models, GPT-5.4 mini and nano. Mini is 2x faster than GPT-5 mini, optimized for coding, multimodal, and subagents with 400k context. Nano is the cheapest for light tasks. Enables fast, low-latency business AI easily via API, ChatGPT, Codex.