News
What's happening in robotics and AI — curated by the wujec.ai editors.
Five of OpenAI's seven Codex models cannot be bought any more. Their model cards are still online
Read OpenAI's model index today and the Codex line looks like a healthy range of seven coding models. Read the deprecation page and five of them were switched off seven weeks ago. The withdrawal was announced on 22 April 2026 and executed on 23 July 2026, in a batch that also took the chat aliases and the deep research variants. Four Codex models went that day - gpt-5-codex, gpt-5.1-codex, gpt-5.1-codex-max and gpt-5.1-codex-mini - and gpt-5.2-codex, released only in January, went with them. The substitute named for most of them is GPT-5.6 Sol, a general-purpose model rather than a coding one; GPT-5.1-Codex Mini was pointed at GPT-5.6 Terra instead. Earlier, on 12 February 2026, OpenAI had already removed codex-mini-latest, the model that started the line in May 2025. That leaves exactly one survivor: GPT-5.3-Codex, released on 24 February 2026. The pricing page confirms it - among all Codex models, gpt-5.3-codex is the only one still quoted with a rate. Everything else in the family is documentation without a product behind it. The documentation has not caught up. The models index still lists all seven with live links, and each card still opens with a present-tense description, a full endpoint table and a price in dollars per million tokens. Nothing on those pages says the model is gone. A developer who starts from the model list - the obvious place to start - has no way of knowing which of these can still be called. There is a second oddity in the same trail. The replacement OpenAI named for codex-mini-latest, gpt-5-codex-mini, has no card at all: the documentation URL returns a redirect and then a 404, and the name does not appear in the model index. The recommended migration target is harder to find than the model it was meant to replace. One more number is worth keeping in view. OpenAI's own policy promises at least six months of notice for generally available models, but only three months for specialised variants - and it names Codex versions as an example. GPT-5.2-Codex lived a little over six months from release to shutdown. In this line, a coding model that is current in January can be gone by summer. We have brought all six retired models into the catalogue with their shutdown dates, so the Codex family can be read as what it is: one model on sale and six in the archive.
GPT-5-Codex →o3 disappears from ChatGPT on Wednesday — and keeps selling in the API for another 107 days
On 26 August 2026 OpenAI o3 stops being selectable in ChatGPT. The date was set on 28 May, when OpenAI gave the model a 90-day sunset alongside GPT-4.5, which went on 27 June. Both were paid-tier-only options hidden behind model settings by then. The same announcement contains the sentence that most coverage drops: "These changes apply to ChatGPT only; there are no changes to the API." In the API, o3 is scheduled to shut down on 11 December 2026, together with o3-pro and the whole first generation of GPT-5 — gpt-5, gpt-5-mini, gpt-5-nano and gpt-5-pro. Every one of them is pointed at gpt-5.6-sol. That is 107 days between the two deaths of the same model. The gap can be much wider. GPT-4o was removed from ChatGPT on 13 February 2026 and is still on sale in the API today at $2.50 per million input tokens, with no shutdown date announced at all. Only its oldest snapshot, gpt-4o-2024-05-13, is scheduled to go, on 23 October — and the model's default snapshot has been gpt-4o-2024-08-06 for two years. A model can be gone from the product the public knows and still be a supported production endpoint six months later. That is why the autumn calendar reads differently depending on which side you are on. For consumers, the visible loss is o3 on Wednesday. For anyone shipping software, the dates that matter are 23 October — when gpt-3.5-turbo, gpt-4, gpt-4 Turbo, o1, o1-pro, o3-mini, o4-mini and gpt-image-1 go for good — then 1 December for the older image models, 11 December for o3 and the GPT-5 family, and 20 January 2027 for the legacy audio and realtime line. OpenAI now publishes the notice periods behind those dates: at least six months for generally available models, at least three for specialised variants such as chat or Codex builds, and as little as two weeks for anything with "preview" in its name. It is a commitment about warning time, not about lifespan — and the ChatGPT calendar it does not cover has been the faster of the two all year.
OpenAI o3 →OpenAI is switching off its entire image line by 1 December — and the cheapest model dies with it
OpenAI's deprecation page now schedules the end of every image model the company sells except one. gpt-image-1 goes dark on 23 October 2026; gpt-image-1.5, gpt-image-1-mini and chatgpt-image-latest all follow on 1 December. Every one of them names the same replacement: gpt-image-2. For most users that is a price cut. Priced per million image tokens, the 2025 original gpt-image-1 is the dearest model in the whole line at $10 in and $40 out. gpt-image-1.5 charges $8 and $32. The survivor, gpt-image-2, charges $8 and $30 — 25% less on output than the model it replaces, which is the opposite of what the industry has been doing this year. The exception is the one model built for people watching costs. gpt-image-1-mini charges $2.50 per million image tokens in and $8.00 out. It has no successor of its own: the migration table sends it to gpt-image-2 as well. That is 3.2 times more on input and 3.75 times more on output, for anyone who chose the mini precisely because it was cheap. The pattern is becoming familiar. Cheap tiers are announced as an entry point, then quietly folded into the flagship when the line is consolidated — and the bill for the migration lands on the users who were most price-sensitive to begin with. Batch pricing halves all of these figures, but it halves them for both the old model and the new one, so the ratio does not move.
Every pinnable ChatGPT model has now been switched off in OpenAI's API — what is left costs four times more
OpenAI has always sold two different things under similar names: the models in its API, and the model that actually answers inside ChatGPT. The second kind was reachable through a small family of aliases — chatgpt-4o-latest, then gpt-5-chat-latest and its successors. As of 10 August 2026, every one of them that carried a version number has been switched off. The sequence is short. chatgpt-4o-latest was removed on 17 February 2026. gpt-5-chat-latest and gpt-5.1-chat-latest were shut down together on 23 July 2026, under an announcement made on 22 April. gpt-5.2-chat-latest and gpt-5.3-chat-latest followed on 10 August 2026, deprecated on 8 May. In each case OpenAI named GPT-5.6 Sol — an API model, not a chat one — as the replacement. What remains is a single entry called chat-latest, and the wording on its card is the point: it "points to the latest Instant model currently used in ChatGPT" and "the underlying model snapshot will be regularly updated". There is no version number to pin. A developer who wants the behaviour of the ChatGPT model can still have it, but not frozen, and not with a guarantee that today's answers will resemble next month's. The price moved in the same direction. gpt-5-chat-latest and gpt-5.1-chat-latest cost USD 1.25 per million input tokens and USD 10 per million output. The 5.2 and 5.3 snapshots raised that to USD 1.75 and USD 14. chat-latest is listed at USD 5 and USD 30 — four times the input price of the first two, and precisely the price of the GPT-5.6 Sol flagship. Part of that buys real capability: the window grew from 128,000 tokens to 400,000, and the output ceiling from 16,384 tokens to 128,000, an eightfold increase. But the pinnable versions were the cheap ones, and they are the ones that are gone. There is also a rule behind the timing, and OpenAI publishes it. Its deprecation policy promises generally available models at least six months of notice, and specialised variants at least three — with "chat variants such as gpt-5.1-chat-latest" given as the first example of the latter. The line closest to the consumer product carries the shortest guarantee in the catalogue. One footnote for anyone reading the documentation directly: the card for GPT-5.1 Chat still describes it as the snapshot currently used in ChatGPT and invites developers to test chat improvements on it. The deprecation table has overtaken that sentence. And a distinction worth keeping straight — what ended was the API alias, not the model's presence in ChatGPT itself.
OpenAI Chat Latest →OpenAI's voice models have had one price cut in 22 months — and text output got dearer along the way
OpenAI has told developers that nine legacy voice models — the entire GPT-4o audio and realtime line, plus the first generation of GPT-Audio and GPT-Realtime — stop answering on 20 January 2027. Adding the four missing GPT-4o voice profiles to our catalogue put the whole price history of that line in one place, and it reads differently from the price history of text. When GPT-4o Audio and GPT-4o Realtime went live on 1 October 2024, an audio token cost $40 per million on the way in and $80 on the way out. In August 2025 the successors, GPT-Audio and GPT-Realtime, brought that to $32 and $64. Today's generally available replacements — gpt-audio-1.5 and gpt-realtime-2.1, the models OpenAI names in the shutdown notice — charge exactly the same $32 and $64. That is one cut, of 20%, in twenty-two months, and nothing since. Text inside the same models moved in both directions. In the realtime line, input fell from $5 to $4 per million and cached input collapsed from $2.50 to $0.40, a drop of 84%. Output went the other way: $20 in 2024, $24 today — 20% more expensive. And the ratio that matters for anyone building a voice product has not shifted at all. In October 2024 an audio input token cost eight times a text input token; in August 2026, at $32 against $4, it still costs eight times as much. What the buyer does get for the same money is room. GPT-4o Realtime remembered 32,000 tokens and answered with at most 4,096; gpt-realtime-2.1 holds 128,000 and returns up to 32,000 — four times the context and eight times the answer at an unchanged audio rate. The cheap tier tells the same story from below: GPT-4o mini Realtime, launched on 17 December 2024, had the shortest memory in the family at 16,000 tokens. One caveat: these are list prices from OpenAI's own model cards, not what any particular customer pays, and audio tokens are not directly comparable to text tokens — a second of speech consumes far more of them than a second of reading. The comparison here is strictly OpenAI against itself, one voice generation against the next.
GPT-4o Realtime →The original GPT-5 gets a death date: OpenAI shuts down the August 2025 snapshot on 11 December
OpenAI's deprecation page now carries a line that would have been hard to imagine a year ago: gpt-5-2025-08-07, the snapshot that launched GPT-5, will be shut off on 11 December 2026. The reasoning model o3-2025-04-16 goes the same day. Both point to a single recommended replacement, gpt-5.6-sol. The original GPT-5 will therefore have lived about sixteen months in the API. That is not unusual by current standards, but it is a striking number for a model that was treated as a generational landmark on release, and it says something about how fast the naming has moved: five point-releases have shipped in the time GPT-4 spent as the default. A nearer deadline is already in force. The aliases gpt-5.2-chat-latest and gpt-5.3-chat-latest stop responding on 10 August 2026, four days from now, also redirecting developers to gpt-5.6-sol. Anyone still calling the -chat-latest names has effectively no migration window left. The rest of the autumn calendar is dense. The Assistants API is removed on 26 August, a year after its replacement by the Responses and Conversations APIs was announced. Sora 2, sora-2-pro and the Videos API end on 24 September with no recommended successor at all — the only entry on the list where OpenAI does not name a replacement. The legacy realtime and audio families survive until 20 January 2027. The consumer side has its own, earlier deadline, announced on 28 May 2026: o3 disappears from ChatGPT on 26 August, at the end of a 90-day sunset, and takes GPT-4.5 with it. That removes the last GPT-4-family model from the product, after GPT-4o and the GPT-4.1 variants were withdrawn in February 2026. The API is unaffected by that change — o3 keeps answering there until December — so for a few months the same model will be alive for developers and gone for everyone else. For a catalogue like this one the pattern matters more than any single date: a frontier model is now a product with a service life measured in months, and the profile of a model increasingly needs to record when it stops answering, not just when it launched.
GPT-5 →