One prompt can now drive more of your work More support for defending infrastructure and open source See Claude’s rules updated for newer risks GPT-6 Intelligent UI makes conversations visual and interactive Claude Haiku 5.5 delivers low-cost, high-performance AI Create visual, interactive answers from a simple chat Run high-volume tasks with a cheaper fast model Share new mathematical results on GitHub to accelerate research Easier access to advanced Claude models for security work Run image, audio, and video search on-device with one model Atlassian integration makes company knowledge easier to use Decisions beta speeds up typed answers from text and images Anthropic expands safer access to advanced cyber features Enable text watermarking via API for EU compliance Claude training becomes easier for enterprise teams Anthropic invests in workforce training for enterprise adoption Enterprise adoption and training get easier Google's Gemini 4 Argon makes heavy tasks easier to offload Gemini 4 Argon is built for long professional tasks Use Astra-level performance affordably in daily work One prompt can now drive more of your work More support for defending infrastructure and open source See Claude’s rules updated for newer risks GPT-6 Intelligent UI makes conversations visual and interactive Claude Haiku 5.5 delivers low-cost, high-performance AI Create visual, interactive answers from a simple chat Run high-volume tasks with a cheaper fast model Share new mathematical results on GitHub to accelerate research Easier access to advanced Claude models for security work Run image, audio, and video search on-device with one model Atlassian integration makes company knowledge easier to use Decisions beta speeds up typed answers from text and images Anthropic expands safer access to advanced cyber features Enable text watermarking via API for EU compliance Claude training becomes easier for enterprise teams Anthropic invests in workforce training for enterprise adoption Enterprise adoption and training get easier Google's Gemini 4 Argon makes heavy tasks easier to offload Gemini 4 Argon is built for long professional tasks Use Astra-level performance affordably in daily work

Official sources only. Rumors, leaks, and get-rich schemes are excluded.

← Back to top

AI BriefingOpenAIFeature Updates17:09

AI summarized from verified sources

OpenAI Launches GPT-5.4 Mini & Nano Fast Small Models

Accelerates coding & agents at low cost

SOURCE CHECK

3 sources

VERIFIED

Sources

Primary / openai.com

Official Blog

Supporting / x.com

Official Blog

Supporting / x.com

Official Blog

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.

What changed

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.

Why it matters

Accelerates coding & agents at low cost

What to watch

Accelerates coding & agents at low cost Key checks: Mini: $0.75/1M in, $4.50/1M out / Nano: $0.20/1M in, $1.25/1M out - cheapest / 2x faster, 54.4% SWE-Bench.