OpenAI: Plus & Pro reasoning model upgraded to GPT-6 Astra
What happened
Between the Aug 31, 2026 and Sep 7, 2026 captures of OpenAI's pricing page, Pulse recorded one change: Plus/Pro flagship reasoning model upgraded from GPT-5.6 Sol Pro to GPT-6 Astra; Plus bullet now reads "Advanced reasoning models with GPT-6 Astra and GPT-5.6", Pro now reads "Pro reasoning powered by GPT-6 Astra". In detail: OpenAI upgraded the flagship reasoning model backing Plus and Pro from GPT-5.6 Sol/Sol Pro to GPT-6 Astra: Plus now lists 'Advanced reasoning models with GPT-6 Astra and GPT-5.6' and Pro's headline reasoning benefit is now 'Pro reasoning powered by GPT-6 Astra'. Pulse files it as a product change (feature change). Pulse's latest capture (Nov 15, 2026) lists Go at $8, Plus at $20, Business at $20 and Pro at $100.
This weekly roll-up includes 2 changes Pulse first recorded in a shorter period: "OpenAI swaps chatbot taglines from benefits to outcomes, prices untouched" (Day 249, 2026, saved Sep 6, 2026) and "OpenAI revamps ChatGPT plan taglines, pivots from use-cases to intelligence" (Day 246, 2026, saved Sep 3, 2026). It also records changes none of those periods did (feature change), so Pulse counts it as a change of its own. Before that, OpenAI's previous recorded change was "OpenAI API Business: new $100/mo Premium seat tier + 200-employee cap" (Aug 31, 2026). OpenAI has been tracked since 2023-11-14.
In the same window Google, Microsoft, X, Metabase and Mistral AI also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- ChangedPlus, ProFeatureGPT-5.6 Sol/Sol ProGPT-6 Astra
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Plus, Pro | Feature | GPT-5.6 Sol/Sol Pro | GPT-6 Astra | Changed |
Values as written on OpenAI's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of OpenAI's pricing page (openai.com) from Aug 31, 2026 and Sep 7, 2026; the change is marked near the top of the page, where "GPT-5.6 Sol/Sol Pro" becomes "GPT-6 Astra".
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The two full-page captures with this change marked up are free with an account.
OpenAI, the last 90 days
Full history- Sep 20, 2026PackagingOpenAI refreshes ChatGPT plan taglines across Free, Go, Plus, Pro
- Sep 16, 2026PackagingOpenAI reframes ChatGPT plan taglines around use-cases, not capabilities
- Sep 11, 2026PackagingOpenAI quietly drops 20x usage option from Pro, rewrites plan taglines
- Sep 7, 2026Feature changeOpenAI: Plus & Pro reasoning model upgraded to GPT-6 Astra This change
- Sep 6, 2026PackagingOpenAI swaps chatbot taglines from benefits to outcomes, prices untouched
- Sep 3, 2026PackagingOpenAI revamps ChatGPT plan taglines, pivots from use-cases to intelligence
- Aug 31, 2026PackagingOpenAI API Business: new $100/mo Premium seat tier + 200-employee cap
- Jul 25, 2026PackagingOpenAI: ChatGPT plan taglines reframed to 'Best for X' audience framing
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- GoogleSep 7Google Workspace: promo discount cut from 50% to 30%/20% off
- MicrosoftAug 31Microsoft Speech: Voice Live Pro Cached Input $40→$0.40; GPT Realtime 2 added
- XAug 24X drops grok-4.5, adds Imagine image/video models and free Playground perk
- MetabaseAug 24Metabase quietly reveals Enterprise-only paid air-gapped deployment option
- Mistral AIAug 17Mistral AI folds Education into Pro, adds bundled API credits to entry plans
Questions about this change
Did OpenAI raise prices in September 2026?
No list-price increase was recorded between Aug 31, 2026 and Sep 7, 2026. The change Pulse detected was a product change: feature change.
What changed on OpenAI's pricing page between Aug 31, 2026 and Sep 7, 2026?
Plus, Pro feature: GPT-5.6 Sol/Sol Pro → GPT-6 Astra, changed. Pulse compared the captures it took on Aug 31, 2026 and Sep 7, 2026; the before/after table above lists each item as written on the page.
How often does OpenAI change its pricing?
This weekly roll-up includes 2 changes Pulse first recorded in shorter periods and also records changes none of them did (feature change), so Pulse counts it as a change of its own; Pulse recorded 2 other pricing-page changes for OpenAI in the 90 days before this one; the previous change was "OpenAI API Business: new $100/mo Premium seat tier + 200-employee cap" on Aug 31, 2026; OpenAI has been tracked since 2023-11-14.