Short answer
As of October 21, 2026, OpenAI has not announced GPT-6.5: there is no announcement, no model page and no API model ID. The newest OpenAI models are GPT-6 Astra (the flagship, released September 3), GPT-6.1 Sol (the mid tier, September 29) and GPT-6 Luna (the cheapest). The "November 1" date going around on X comes from a website that X users tie to OpenAI's Tibo Sottiaux; OpenAI itself has not confirmed it. When GPT-6.5 ships, it will appear on TeamoRouter's pricing page under OpenAI's own model ID; until then, gpt-6-astra and gpt-6.1-sol work in Codex with the setup below, and switching later is a one-line change.
The GPT-6.5 rumors, checked
The opensi.lol countdown. On October 19, OpenAI's Tibo Sottiaux, who runs Codex, posted on X that he had bought a new domain and was "very excited for it", without naming it. Users soon matched it to opensi.lol, and on October 20 screenshots showed a hidden "6.5" in the page source next to a countdown to November 1, 10 a.m. San Francisco time. That is day 28, the last day, of the "28 days" in which Tibo promised a Codex upgrade every day. What we could check on October 21:
- The domain was registered on September 22, 2026. The archived page from September 23 calls it "an independent parody" and says the domain is for sale; the registration record was updated on October 15. That fits the domain changing hands shortly before Tibo's post.
- The current page is a single video, and its source has a comment tagging OpenAI's Greg Brockman, Tibo Sottiaux and two other accounts.
- The "6.5" from the screenshots is no longer in the page source.
So the link to Tibo is plausible, but neither he nor OpenAI has said the site is about GPT-6.5. Treat November 1 as a rumor until OpenAI announces it.
The "Doug" codename. On September 7 an analyst on X predicted that OpenAI's next flagship would be called GPT-6.5 with the internal codename "Doug", then retracted it within a day: by their corrected reading, Doug is the base model behind GPT-6 Astra.
How far apart OpenAI's releases have been
| Release | Date |
|---|---|
| GPT-5 | August 7, 2025 |
| GPT-5.5 | April 23, 2026 |
| GPT-6 Astra | September 3, 2026 |
| GPT-6 Sol and GPT-6 Luna | late September 2026 |
| GPT-6.1 Sol | September 29, 2026 |
GPT-5.5 arrived about eight and a half months after GPT-5. In the GPT-6 generation OpenAI shipped a .1 update less than a month after the first model, so the old spacing is no guide. OpenAI has given no date for GPT-6.5.
Price: none published yet
OpenAI has not published GPT-6.5 pricing. For reference, here is the current GPT-6 lineup per 1 million tokens:
| Model | Model ID | OpenAI price (input / output) | TeamoRouter (input / output) | Use it for |
|---|---|---|---|---|
| GPT-6 Astra | gpt-6-astra |
$10 / $50 | $1.71 / $8.55 | The hardest tasks |
| GPT-6.1 Sol | gpt-6.1-sol |
$2 / $10 | $0.342 / $1.71 | Everyday coding and agent work |
| GPT-6 Luna | gpt-6-luna |
$0.10 / $0.50 | $0.05 / $0.25 | Bulk and simple tasks |
TeamoRouter prices are at the time of writing and change with supply; the current numbers are on the pricing page. The last ".5" release was priced above its base model (GPT-5.5 lists at $5 / $30, GPT-5 at $1.25 / $10), but that says nothing certain about GPT-6.5.
Use GPT-6 in Codex now
Put this in ~/.codex/config.toml and set your TeamoRouter key in OPENAI_API_KEY:
model_provider = "teamorouter"
model = "gpt-6.1-sol"
model_reasoning_effort = "medium"
[model_providers.teamorouter]
name = "TeamoRouter"
base_url = "https://api.teamorouter.com/v1"
env_key = "OPENAI_API_KEY"
wire_api = "responses"
Use gpt-6-astra instead for the hardest work, or switch inside a session with /model. When GPT-6.5 is released, change the model line to its ID; the key and the rest of the file stay the same. Step-by-step setup: Codex CLI guide.
Calling the API directly works the same way:
curl https://api.teamorouter.com/v1/responses \
-H "Authorization: Bearer YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "gpt-6.1-sol", "input": "Write a Python function that checks whether a number is prime"}'
Full reference: API integration.
Paying for usage
No subscription: you top up a balance from $5 and pay only for the tokens you use, by card or with USDT, USDC or ETH from any exchange app (how to pay with crypto). The same key also works for Claude and Gemini.
FAQ
Is GPT-6.5 out? No. As of October 21, 2026, OpenAI has not announced a model called GPT-6.5.
Is GPT-6.5 coming on November 1? Unconfirmed. The date comes from the countdown on opensi.lol, which X users tie to Tibo Sottiaux's new domain and to the last day of his "28 days" of Codex upgrades. OpenAI has not announced anything.
Will GPT-6.5 work in Codex through TeamoRouter? TeamoRouter lists OpenAI models under OpenAI's own IDs, so once it is on the pricing page, changing the model line in config.toml is enough.
What should I use until then? GPT-6 Astra for the hardest problems, GPT-6.1 Sol for everyday coding, GPT-6 Luna for bulk work.
Related
- GPT-6 Astra release date: how the last GPT launch unfolded
- GPT-6 Astra pricing
- GPT-6 Sol API: the Sol / Astra / Luna lineup
- GPT-6 Luna API: the cheapest GPT-6 model