This tracker lists the newest AI models from Anthropic, OpenAI and Google. Model names and IDs are checked against each company’s official documentation: the Claude models overview, the OpenAI models page and the Gemini API changelog. Release dates are only given when an official page shows them.
TL;DR: Google’s changelog shows Gemini 4 Argon generally available on October 13, 2026. OpenAI’s models page lists GPT-6 Astra, GPT-6.1 Sol, GPT-6.1 Terra and GPT-6 Luna. Anthropic announced Claude Fable 5.2 on November 9, 2026, and its page lists Fable 5.2, Opus 5.5, Sonnet 5.5 and Haiku 5.5.
Last updated: November 11, 2026.
Latest model by company
| Company | Newest flagship listed | Model ID | Date shown by the company |
|---|---|---|---|
| Anthropic | Claude Fable 5.2 | claude-fable-5-2 | November 9, 2026 (Anthropic announcement) |
| OpenAI | GPT-6 Astra (most capable) | gpt-6-astra | Not shown on the docs page |
| Gemini 4 Argon | gemini-4-argon | October 13, 2026 |
New model listed: Claude Mythos 5.1
- Model ID: claude-mythos-5-1.
- Listed by: Anthropic’s official models page.
- Release date: not shown on the company’s page.
- What it is: add a one-line description from the announcement.
Source: Anthropic models page.
New model listed: Claude Mythos 5.2
- Model ID: claude-mythos-5-2.
- Listed by: Anthropic’s official models page.
- Release date: not shown on the company’s page.
- What it is: add a one-line description from the announcement.
Source: Anthropic models page.
New model listed: Claude Fable 5.1
- Model ID: claude-fable-5-1.
- Listed by: Anthropic’s official models page.
- Release date: not shown on the company’s page.
- What it is: add a one-line description from the announcement.
Source: Anthropic models page.
Claude Fable 5.2 (November 9, 2026)
- What it is: one of Anthropic’s new models for the hardest technical challenges. The models page lists it for demanding reasoning and long-horizon agentic work.
- Model ID: claude-fable-5-2.
- Release date: November 9, 2026, the date of Anthropic’s announcement.
- Price: $8 per million input tokens and $40 per million output tokens. An optional fast mode costs $16 and $80.
- Where: available on the Claude Platform, Amazon Web Services, Google Cloud and Microsoft Azure.
Source: Anthropic announcement and Anthropic models page. Our report: Claude Fable 5.2 price and speed.
GPT-6 Cyber (limited access, November 5, 2026)
- Who can use it: only a select group of approved Daybreak Red customers, through the API and Codex. Daybreak Red is OpenAI’s vetted program for authorized security testing. It is not one of the general GPT-6 models listed below.
- What it is: a cybersecurity model for authorized work such as vulnerability research and exploit development. OpenAI says it plans to widen access to all Daybreak Red customers soon.
- Model ID: gpt-6-cyber.
- Release date: November 5, 2026, the date of OpenAI’s announcement.
- What it means for you: unless your organization is approved for Daybreak Red, you cannot use it, and it does not change which OpenAI model you get in ChatGPT.
Source: OpenAI announcement and OpenAI models page.
Gemini 4 Argon (October 13, 2026)
- What it is: Google’s newest Gemini model, listed in the Gemini API changelog as generally available for complex coding, agentic, math and science tasks.
- Model ID: gemini-4-argon.
- Earlier: coverage dated September 30 described Gemini 4 Argon as a limited preview for vetted cyber defenders, per Presenc AI. The October 13 changelog entry is the general availability date.
- What it means for you: developers can call it through the Gemini API. Consumer app availability is not covered by the changelog.
Source: Gemini API changelog.
Claude Haiku 5.5 (reported October 7, 2026)
- What it is: the smallest model in the current Claude family, listed for high-volume, latency-sensitive work such as classification and routing.
- Model ID: claude-haiku-5-5.
- Date: October 7 comes from a single outlet, TLDL, and Anthropic’s docs page shows no release dates, so treat the date as unconfirmed.
- Family: Anthropic’s page lists four current models, Fable 5.2, Opus 5.5, Sonnet 5.5 and Haiku 5.5, all with a 1M token context window.
Source: Claude models overview.
OpenAI GPT-6 family (September 2026, reported)
- What OpenAI lists: GPT-6 Astra (gpt-6-astra), GPT-6.1 Sol (gpt-6.1-sol), GPT-6.1 Terra (gpt-6.1-terra) and GPT-6 Luna (gpt-6-luna). The page calls Astra the most capable and Sol close to it at lower cost.
- Dates: Presenc AI reports Astra on September 4, Sol and Luna on September 22, and GPT-6.1 Sol on September 29. Another outlet dates a wider ChatGPT launch to October 7. OpenAI’s models page shows no release dates, so these dates conflict and stay unconfirmed.
Source: OpenAI models page.
Frequently Asked Questions
What is the latest Gemini model?
Gemini 4 Argon, listed as generally available in Google’s changelog on October 13, 2026.
What is the latest OpenAI model?
OpenAI’s models page lists GPT-6 Astra, GPT-6.1 Sol, GPT-6.1 Terra and GPT-6 Luna. Exact release dates are not shown there.
Is GPT-6 Cyber available in ChatGPT?
No. OpenAI says GPT-6 Cyber is initially available only through the API and Codex, to a select group of approved Daybreak Red customers.
What is the latest Claude model?
Anthropic’s page lists Claude Fable 5.2, Opus 5.5, Sonnet 5.5 and Haiku 5.5 as current models. Fable 5.2 was announced on November 9, 2026.
