Discussion

• @openaidevs @openaidevs on x

  We're introducing GPT-5.4 mini and nano, our most capable small models yet. GPT-5.4 mini is more than 2x faster than GPT-5 mini. Optimized for coding, computer use, multimodal understanding, and subagents. For lighter-weight tasks, GPT-5.4 nano is our smallest and cheapest [image…

• @openai @openai on x

  GPT-5.4 mini is available today in ChatGPT, Codex, and the API. Optimized for coding, computer use, multimodal understanding, and subagents. And it's 2x faster than GPT-5 mini. https://openai.com/... [image]

• @dkundel Dominik Kundel on x

  GPT-5.4-mini is a wildly capable model and gives you ~3.3x more usage on Codex tasks compared to GPT-5.4.  It's excellent for spinning up new subagents!

• @scaling01 @scaling01 on x

  GPT-5.4-mini looks really good for computer-use [image]

• @windsurf @windsurf on x

  GPT-5.4 mini is now available in Windsurf!

• @mercor_ai @mercor_ai on x

  We evalled @OpenAI GPT-5.4 mini and nano on APEX-Agents. With xhigh reasoning, mini scores 24.5% Pass@1. It outperforms other lightweight models like Gemini 3.1 Flash Lite (12.8%) as well as midweight models like Sonnet 4.6 (23.7% Pass@1) - but the token $ is just ¼. [image]

• @scaling01 @scaling01 on x

  GPT-5.4-mini 2.25 times more expensive than GPT-5-mini $0.75 Input $4.5 Output 400k [image]

• @openaidevs @openaidevs on x

  GPT-5.4 mini is available today in the API, Codex, and ChatGPT. In the API, it has a 400k context window. In Codex, it uses only 30% of the GPT-5.4 quota, letting you handle simpler coding tasks for about one-third of the cost. GPT-5.4 nano is only available in the API.

• @cryptopunk7213 @cryptopunk7213 on x

  f*ck yes openai just dropped 2 new models thats 2X faster and cheaper but AS GOOD as gpt-5.4 (it actually beats it imo) - $0.20 PER MILLION tokens is practically free lol (nano) - matches 5.4 at coding, computer use, reasoning but much much faster. - oAI designed these models [im…

• @kimmonismus @kimmonismus on x

  GPT-5.4 mini available today, looks very good so far. Going to dig into it later [image]

• @scaling01 @scaling01 on x

  GPT-5.4-mini and nano on SWE-Bench-Pro are looking pretty good GPT-5.4-nano-xhigh beats GPT-5.4-low [image]

• @dejavucoder Sankalp on x

  i had replaced all my gpt 5 mini calls with gemini flash 3 but looks like we have a new worthy candidate. i just gpt 5.4 mini has more predictable TTFT

• @jasonbotterill @jasonbotterill on x

  5.4-mini is roughly Sonnet 4.6 intelligence but 70% cheaper and like 3x faster [image]

• @scaling01 @scaling01 on x

  GPT-5.4-mini is dead on arrival you can just use Kimi-K2.5 for $1.5 less and better performance [image]

• @valsai @valsai on x

  GPT 5.4 Mini comes in at #13 on the Vals Index - equivalent performance to GPT 5 🚀 [image]

• @simonw Simon Willison on x

  Couldn't resist getting OpenAI Codex to render me a pelican for every combination of model and reasoning effort - I do think gpt-5.4 xhigh came out the best, the pelican has a fish in its beak! [image]

• @kenn Kenn Ejima on x

  Significant price increases from GPT-5 models GPT-5.4 mini — 0.25 → 0.75 (3x) GPT-5.4 nano — 0.05 → 0.20 (4x) They should really be compared to the previous generation's frontier models, and I believe the new prices are fair.  The age of massively subsidized tokens is ending...

• @sherwinwu Sherwin Wu on x

  We're now in a world where you can get 54.4% SWE-Bench PRO performance, and 60% (!) T-Bench 2.0 performance: - at 2x the speed of GPT-5-mini - for 7.5x to 10x cheaper than GPT-5.4 Wild!

• @vercel_dev @vercel_dev on x

  GPT-5.4 Mini and Nano just landed on Vercel AI Gateway, with fast state-of the-art coding and computer use for the size. Built for sub-agent workflows, try it now with 𝚖𝚘𝚍𝚎𝚕: ‘𝚘𝚙𝚎𝚗𝚊𝚒/𝚐𝚙𝚝-𝟻.𝟺-𝚖𝚒𝚗𝚒’ or ‘𝚘𝚙𝚎𝚗𝚊𝚒/𝚐𝚙𝚝-𝟻.𝟺-𝚗𝚊𝚗𝚘’.

• @suvanshsanjeev Suvansh Sanjeev on x

  original vision for nano reasoning was hundreds of subagents working in harmony. with 5.4-nano, you can get that for a dollar. I'll be watching for your demos 👀 insane amount of work on the from @qingquan_song, @astonzhangAZ, Alex Efremov, Sijia Chen, etc to push the

• @altryne Alex Volkov on x

  Very interesting release! OpenAI ships 2 tiny / fast models: GPT 5.4 Mini (and Nano) that are MUCH cheaper (1/3 the price in Codex) and can do very comparative tasks, faster. Great for sub-agents, great for Hearbeats tasks inside your Claws and especially great for Browser [image…

• @scaling01 @scaling01 on x

  OpenAI: “GPT-5.4 mini is more than 2x faster than GPT-5 mini” also OpenAI: it's now 2.25x more expensive [image]

• @jxnlco Jason Liu on x

  Super exciting for subagents

• @simonw Simon Willison on x

  Notes and pelicans for today's GPT-5.4 mini and nano releases - the nano model looks like it could describe every image in my 76,000 photo library for $52 total https://simonwillison.net/...

• @emanueledpt Emanuele Di Pietro on x

  Try the new GPT-5.4 mini in Codex Remote Control for iOS! [image]

• @arena @arena on x

  GPT 5.4 Mini and Nano by @OpenAI are available in the Text and Vision Arena! Check them out and don't forget to vote, we'll see how they stack up on the leaderboards. [image]

• @openrouter @openrouter on x

  The new @OpenAI GPT-5.4 mini and nano are available now on OpenRouter!  In our early testing, mini's increase in speed was useful for staying in the loop for coding agents, and results in better UX for chat apps that allow the models to perform agent tasks mid conversation.

• @morganlinton Morgan on x

  Insanely bullish on small, special purpose models.

• @poe_platform Poe on x

  OpenAI's GPT-5.4-Nano and GPT-5.4-Mini are now live on Poe. GPT-5.4-Nano is a strong fit for fast, high-volume tasks like summarizing transcripts, labeling tickets, rewriting content, quick RAG answers, and running @openclaw flows with Poe where latency and cost matter most. [ima…

• @matthewberman Matthew Berman on x

  Use GPT-5.4 mini and nano for most of your Openclaw use cases. It's a workhorse model.

• @nickbaumann_ Nick on x

  GPT-5.4 mini matters for subagents because it changes what feels worth handing off. The parent thread should hold the architecture, plan, and progress narrative. Fast subagents can explore the repo, check hypotheses, and preserve the parent thread's limited attention. [video]

• @cgtwts @cgtwts on x

  Introducing GPT-5.4 mini > 2x faster than GPT5 mini > stronger at coding > better with tools > improved multimodal understanding > built for agents and subagents > GPT 5.4 nano is the smallest, fastest and cost efficient version of GPT 5.4 for lightweight tasks. [video]

• @davis7 Ben Davis on x

  Haiku 4.5 has finally been dethroned by GPT 5.4 mini: - faster - cheaper - smarter - better at tool calling Gemini 3.0 flash still has a place in “turn this video/audio/blob of text into json”, but for any small model task that requires an agent loop (sub agents, search, quick [v…

• @astonzhangaz Aston Zhang on x

  GPT-5.4, you have company now. Today we're releasing GPT-5.4 Mini and Nano 🚀, bringing many of the strengths of GPT-5.4 to faster, more efficient models. Despite their size, they shine on coding and subagent workflows and can make a big difference for high-volume workloads. [imag…

• @flavioad Flavio Adamo on x

  Had early access to both GPT-5.4 mini and nano What feels most interesting to me is that smaller models are starting to make more sense as workers with a specific role, not just “cheaper” versions of the bigger one If a stronger model handles planning and final judgment, while sm…

• @jetbrains @jetbrains on x

  GPT-5.4 mini and nano are now available in the AI chat of your JetBrains IDE. Our Developer Advocate gave GPT-5.4 mini a creative challenge - and it responded with a full spring animation. Not bad for something called “mini.” Your turn. Try it in your IDE! [video]

• @p4cs_pedro Pedro Custodio on x

  holy shit it's fast.

• r/OpenAI r on reddit

  Introducing GPT-5.4 mini and nano