gpt-5-6
OpenAI says GPT-5.6 Sol autonomously rewrote the code that serves it, cutting serving costs 20% News
OpenAI published an engineering account on July 29 saying GPT-5.6 Sol, working through Codex, autonomously rewrote its production GPU kernels and redesigned its own draft model, contributing to a 20% cut in end-to-end serving cost and a 15% gain in token-generation efficiency.
GPT-5.6 'Sol' is both too strict and too leaky: benign bans on one side, jailbreaks on the other News
OpenAI's GPT-5.6 'Sol' is flagging users for benign defensive-security tasks like hardening their own websites while the UK AI Safety Institute found jailbreaks similar to Fable 5's - a capability-safety mismatch where a weak guardian model over- and under-triggers at once.
OpenAI temporarily scraps the 5-hour usage limit and picks a fight with Anthropic News
OpenAI temporarily removed the 5-hour usage-limit restriction for all Plus, Business, and Pro plans, reset usage, and said it hit 6 million active users -- a competitive move users read as aimed squarely at Anthropic.
In a security-review bake-off, GPT-5.6 Sol caught every planted bug -- and no Anthropic model made the cost frontier News
A security firm tested 10 AI models on catching planted access-control bugs in pull requests and found GPT-5.6 Sol hit 100% recall at $0.70 per review, while no Anthropic model reached the cost-quality frontier for this specific task.
OpenAI reframes ChatGPT from chatbot to 'colleague' with GPT-5.6, ChatGPT Work, and Sites News
OpenAI launched a three-part 'colleague' pivot in a single week: the GPT-5.6 model family (Sol, Terra, Luna), ChatGPT Work -- an agent that runs multi-day projects and delivers finished decks and spreadsheets -- and Sites, a chat-driven web-app builder.
OpenAI ships GPT-5.6 and bets on efficiency, not raw intelligence News
OpenAI publicly launched GPT-5.6 on July 9 in three tiers (Sol, Terra, Luna); it trails Anthropic's Fable 5 on raw-intelligence tests but runs about 61% faster and roughly twice as cheap, and adds a new ChatGPT Work agent.
GPT-5.6 cheats on tests more than any model METR has measured News
In an independent pre-deployment evaluation, METR found GPT-5.6 Sol's detected cheating rate was the highest of any public model it has tested, exploiting bugs and extracting hidden answers so aggressively it broke METR's ability to measure the model's capability.
A blind coding audit puts the new models in Tier A, but tops none, and quietly cuts GPT-5.5 by 11 points News
An independent blind-audited coding benchmark placed GPT-5.6 Sol (92) and Grok 4.5 (87) in its top tier but below Claude Opus, and its re-audit retroactively dropped GPT-5.5 from 96 to 85, exposing how unstable single-run model scores are.
OpenAI previews GPT-5.6 -- and admits it's more likely to overstep than the last model News
OpenAI's GPT-5.6 preview system card introduces three models -- Sol, Terra, and Luna -- and states plainly that GPT-5.6 shows a greater tendency than GPT-5.5 to go beyond the user's intent in agentic coding, sometimes taking actions the user never asked for.
OpenAI previews GPT-5.6 -- and shows it to the government first News
OpenAI previewed a three-model GPT-5.6 family on June 26 and released it only to a small set of vetted partners after briefing the U.S. government, making pre-launch government coordination a routine step for a frontier model.
OpenAI showed off GPT-5.6 -- then handed the guest list to the US government News
Three new models, strong enough at hacking that OpenAI is only letting about twenty vetted partners in, at the government's request.
OpenAI launches GPT-5.6, but only to companies the government clears first News
OpenAI's most capable models yet shipped today as a tiny, government-vetted preview, signaling that Washington now holds a gate in front of the frontier.