OpenAI launches GPT-5.5, boosting AI intelligence and speed for complex tasks
ByPulseAugur Editorial·
Summary by gemini-2.5-flash-lite
from 54 sources
OpenAI has released GPT-5.5 and GPT-5.5 Pro, their latest and most intuitive models, designed for complex tasks and agentic capabilities. These models excel in areas like coding, data analysis, and operating software, offering enhanced intelligence without sacrificing speed. GPT-5.5 also demonstrates improved efficiency, using fewer tokens for tasks and achieving state-of-the-art performance on coding benchmarks like Terminal-Bench 2.0 and SWE-Bench Pro.
AI
GPT-5.5 is rolling out today for Plus, Pro, Business and Enterprise users across ChatGPT and Codex.
We’re also introducing GPT-5.5 Pro for Pro, Business, and Enterprise users in ChatGPT.
In ChatGPT, full-stack inference improvements enable a more capable model at faster speed. This efficiency is a game-changer for GPT-5.5 Pro, now a much more practical option for demanding tasks, and a step change in the level of difficulty and quality of work ChatGPT can take on
GPT-5.5 delivers this step up in intelligence without compromising on speed.
GPT-5.5 matches GPT-5.4 per-token latency in real-world serving, while performing better across nearly every evaluation we measured.
It also uses significantly fewer tokens to complete the same Codex h…
GPT-5.5 excels at writing and debugging code, researching online, analyzing data, creating documents and spreadsheets, operating software, and moving across tools until a task is finished.
The gains are especially clear in agentic coding, computer use, knowledge work, and early
Introducing GPT-5.5
A new class of intelligence for real work and powering agents, built to understand complex goals, use tools, check its work, and carry more tasks through to completion. It marks a new way of getting computer work done.
Now available in ChatGPT and Codex. htt…
GPT-5.4 mini and nano are smaller, faster versions of GPT-5.4 optimized for coding, tool use, multimodal reasoning, and high-volume API and sub-agent workloads.
Introducing GPT-5.4, OpenAI’s most most capable and efficient frontier model for professional work, with state-of-the-art coding, computer use, tool search, and 1M-token context.
GPT-5.3-Codex is a Codex-native agent that pairs frontier coding performance with general reasoning to support long-horizon, real-world technical work.
GPT‑5.3-Codex is the most capable agentic coding model to date, combining the frontier coding performance of GPT‑5.2-Codex with the reasoning and professional knowledge capabilities of GPT‑5.2.
ChatGPT Go is now available worldwide, offering expanded access to GPT-5.2 Instant, higher usage limits, and longer memory—making advanced AI more affordable globally.
GPT-5.2 is the latest model family in the GPT-5 series. The comprehensive safety mitigation approach for these models is largely the same as that described in the GPT-5 System Card and GPT-5.1 System Card. Like OpenAI’s other models, the GPT-5.2 models were trained on diverse dat…
GPT-5.2 is our most advanced frontier model for everyday professional work, with state-of-the-art reasoning, long-context understanding, coding, and vision. Use it in ChatGPT and the OpenAI API to power faster, more reliable agentic workflows.
This system card outlines the comprehensive safety measures implemented for GPT‑5.1-CodexMax. It details both model-level mitigations, such as specialized safety training for harmful tasks and prompt injections, and product-level mitigations like agent sandboxing and configurable…
Introducing GPT-5.1-Codex-Max, a faster, more intelligent agentic coding model for Codex. The model is designed for long-running, project-scale work with enhanced reasoning and token efficiency.
GPT-5.1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.
This GPT-5 system card addendum provides updated safety metrics for GPT-5.1 Instant and Thinking, including new evaluations for mental health and emotional reliance.
We’re upgrading the GPT-5 series with warmer, more capable models and new ways to customize ChatGPT’s tone and style. GPT-5.1 starts rolling out today to paid users.
OpenAI collaborated with 170+ mental health experts to improve ChatGPT’s ability to recognize distress, respond empathetically, and guide users toward real-world support—reducing unsafe responses by up to 80%. Learn how we’re making ChatGPT safer and more supportive in sensitive …
This system card details GPT-5’s improvements in handling sensitive conversations, including new benchmarks for emotional reliance, mental health, and jailbreak resistance.
This addendum to the GPT-5 system card shares a new model: GPT-5-Codex, a version of GPT-5 further optimized for agentic coding in Codex. GPT-5-Codex adjusts its thinking effort more dynamically based on task complexity, responding quickly to simple conversational queries or smal…
This GPT-5 system card explains how a unified model routing system powers fast and smart responses using gpt-5-main, gpt-5-thinking, and lightweight versions like gpt-5-thinking-nano, optimized for different tasks and developer use.
We are introducing GPT‑5, our best AI system yet. GPT‑5 is a significant leap in intelligence over all our previous models, featuring state-of-the-art performance across coding, math, writing, health, visual perception, and more.
We’re releasing gpt-oss-120b and gpt-oss-20b—two state-of-the-art open-weight language models that deliver strong real-world performance at low cost. Available under the flexible Apache 2.0 license, these models outperform similarly sized open models on reasoning tasks, demonstra…
4o image generation is a new, significantly more capable image generation approach than our earlier DALL·E 3 series of models. It can create photorealistic output. It can take images as inputs and transform them.
As the final model release of GPT-2’s staged release, we’re releasing the largest version (1.5B parameters) of GPT-2 along with code and model weights to facilitate detection of outputs of GPT-2 models. While there have been larger language models released since August, we’ve con…
GPT-5.5 is now available in the API.
The model brings higher intelligence and stronger token efficiency to complex work, helping tasks get done with fewer retries.
Don't Worry About the Vase (Zvi Mowshowitz)
TIER_1·Zvi Mowshowitz·
how is gpt-5.5 performing for you?<div class="rsshub-quote"><br /><br />VraserX e/acc: GPT-5.5 feels insane so far.<br /><br />What I love most is that it is blazing fast, but still clearly smarter than GPT-5.4.<br /><br />In my own tests, it feels around 2x to 5x faster dependin…
Don't Worry About the Vase (Zvi Mowshowitz)
TIER_1·Zvi Mowshowitz·
<p><strong>Note on independence:</strong> This evaluation was conducted under a standard NDA. Due to the sensitive information shared with METR as part of this evaluation, OpenAI’s comms and legal team required review and approval of this post (the latter is not…
<p>The system card for GPT-5.5 mostly told us what we expected. <a href="https://x.com/MaskedTorah/status/2048929098509226440">See this thread from</a> Drake Thomas for some comparisons to Anthropic’s model card for Opus 4.7.</p> <p>Now we move on to asking what it means in pract…
<p>Last week, OpenAI announced GPT-5.5, including GPT-5.5-Pro.</p> <p>My overall read here is that GPT-5.5 is a solid improvement, and for many purposes GPT-5.5 is competitive with Claude Opus. Reactions are still coming in and it is early. My guess on the shape is that GPT-5.5 i…
One Useful Thing (Ethan Mollick)
TIER_1·Ethan Mollick·
**OpenAI launched GPT-5.5** as its new flagship model for "real work and powering agents," immediately available in ChatGPT and Codex but with delayed API access due to enhanced safety requirements. The model features improved token efficiency and supports longer multi-step execu…
**OpenAI** launched **GPT-5.1** with improvements in conversational tone, instruction following, and adaptive reasoning. **GPT-5.0** is being sunset in 3 months. ChatGPT introduces new tone toggles for personalization, serving over **800 million users**. **Waymo** rolls out freew…
**Sam Altman** at Davos highlighted that his top priority is launching the new model, likely called **GPT-5**, while expressing uncertainty about **Ilya Sutskever**'s employment status. **Itamar from Codium** introduced the concept of **Flow Engineering** with **AlphaCodium**, ga…
Just 48 hours after releasing GPT 5.3 Instant, OpenAI have released GPT 5.4 Thinking, so either their is an imminent singularity or perhaps we are being distracted from other news. This video will give 9 crucial bits of context, not just on the GPT 5.4 drop but on the background …
<!-- SC_OFF --><div class="md"><p>OpenAI saying GPT-5.5 can handle similarly hard tasks faster while using fewer tokens is interesting to me for one reason: </p> <p>that might matter more than a pure benchmark jump. </p> <p>A lot of model launches get framed as "smarter than…
