AI model · OpenAI
GPT-6.1 Sol
OpenAI released GPT-6.1 Sol on 29 Sep 2026. API list price: $2.00 per million input tokens and $10.00 per million output tokens. It is not on ChatGPT’s free plan.
Released
29 Sep 2026
Lower-cost professional and agentic model released in the API; rollout to ChatGPT Work and Codex began the same day The lab’s announcement
API list price, per million tokens
$2.00 in $10.00 out
Standard tier, prompts up to 272K tokens; $4.00 in and $15.00 out above that. Cached input $0.10.
OpenAI’s pricing page, read 23 Oct 2026
On the free plan?
Not included
GPT-6.1 Sol is described as a model for eligible paid plans. Source
The Access Gap, checked 3 Oct 2026
OpenAI’s other recent models
data through 30 Oct 2026
- 26 Oct 2026 GPT-6.1 Terra Fast, efficient model for visual reasoning, computer use and writing, released in the API; rollout to ChatGPT Work and Codex for Plus and higher plans began the same day
- 22 Sep 2026 GPT-6 Sol / Luna Two GPT-6 models released together
- 4 Sep 2026 GPT-6 Astra First GPT-6 model; wide availability a day after a limited start
- 9 Jul 2026 GPT-5.6 (Sol / Terra / Luna) Three price-performance tiers, GA across ChatGPT, Codex and the API
- 5 May 2026 GPT-5.5 Instant ChatGPT’s new default for everyone, the tier just below GPT-5.5 Thinking; on the API as chat-latest
- 17 Mar 2026 GPT-5.4 mini GPT-5.4’s mini, at $0.75 in and $4.50 out, released to the API with GPT-5.4 nano; third that day, below GPT-5.4 and GPT-5.3 Instant
- 3 Mar 2026 GPT-5.3 Instant ChatGPT’s new default for everyone, the tier just below Thinking; on the API as gpt-5.3-chat-latest
GPT-6.1 Sol in OpenAI’s full release log · its row on the release chart
Release dates and notes come from the site’s release record, data through 30 Oct 2026; each links the lab’s own announcement. Prices are list prices as the lab’s pricing page printed them on the day shown, before any discount. Something wrong? Tell us.