Quick answer
The August 6, 2026 GPT-5.6 Sol update is specific to the Chat experience in ChatGPT. OpenAI says the Sol version that powers Work and Codex did not change as part of this release.
That means “GPT-5.6 Sol” is not enough information for a current comparison. Record the product surface and date:
- updated Sol in ChatGPT Plus or Pro;
- Sol in Work;
- Sol in Codex;
- Sol through the OpenAI API;
- any separately verified third-party surface.
Use the GPT-5.6 family page for the wider model and API record.
The product boundary at a glance
| Surface | What the August 6 announcement establishes | Safe conclusion |
|---|---|---|
| ChatGPT Plus and Pro | Updated ChatGPT-only Sol plus a thought slider | The new behavior and control apply in ChatGPT |
| Work | Its Sol version did not change as part of the release | Do not attribute the ChatGPT update to Work |
| Codex | Its Sol version did not change as part of the release | Do not attribute the ChatGPT update to Codex |
| OpenAI API | No API revision is established by this announcement | Check the current model guide and API record |
| Flowith | No Flowith launch or mapping is established | Check the live workspace and entitlement |
“Did not change” is a release boundary. It does not prove that the products are identical, permanently pinned, better, worse, or unavailable.
Why the same family name is not enough
A model-family or tier name can coexist with product-specific differences in:
- tuning and release revision;
- interaction controls;
- system instructions;
- tools and connected data;
- latency and processing choices;
- plan entitlement and quotas;
- rollout date;
- retention and administration.
OpenAI describes the updated ChatGPT Sol as optimized for everyday chats. It powers quick and deeper responses for Plus and Pro, with a slider controlling how much thought ChatGPT applies. Those statements should remain attached to ChatGPT unless another official source extends them.
How to compare Sol across products
Use a version-aware evaluation record:
- Name the product: ChatGPT, Work, Codex, API, or another verified surface.
- Record the plan, account type, and date.
- Capture the visible model label and any selectable thought or reasoning control.
- Use the same task, sources, tools, and acceptance criteria.
- Separate response quality from product features such as file access, code execution, connectors, or workspace controls.
- Re-run the evaluation after a documented product update.
A screenshot showing “Sol” on one product does not prove the revision or behavior on another.
What changes in ChatGPT
For Plus and Pro, OpenAI says the updated ChatGPT Sol is designed for more focused answers, more reliable facts, and a more consistent experience from quick responses to deeper thinking. The new thought slider is documented for ChatGPT on web, mobile, and desktop.
Use the Plus and Pro thought-slider guide for a task-based way to choose the setting.
These design goals are not a guarantee that every answer is factual. Dates, numbers, sources, policies, and high-stakes recommendations still require verification.
What does not change in this release
The announcement explicitly says the Sol version powering Work and Codex is not changing as part of this release. Preserve that narrow wording:
- do not call Work or Codex “upgraded” by the August 6 ChatGPT post;
- do not assume their model behavior regressed;
- do not infer an API snapshot or alias change;
- do not infer a Flowith launch;
- do not convert a product release into a permanent version guarantee.
Later official releases can change any of these surfaces independently.
Which guide should you use?
- For Free and Go access, use the Luna unlimited-text and Think guide.
- For Plus and Pro reasoning controls, use the Sol thought-slider guide.
- For API pricing, family roles, and Flowith status, use the GPT-5.6 model page.
- For Work or Codex, verify that product’s current model and release documentation before making a version claim.
Frequently asked questions
Is the August 6 GPT-5.6 Sol update available in Work?
OpenAI says the Sol version powering Work did not change as part of the August 6 ChatGPT release. Do not transfer the ChatGPT behavior update to Work without a separate official record.
Is the August 6 GPT-5.6 Sol update available in Codex?
OpenAI says the Sol version powering Codex did not change as part of the August 6 ChatGPT release. Codex model availability and behavior must be checked on the Codex surface.
Why can products use the same Sol name but differ?
A family label can identify a model tier while product-specific versions, tuning, controls, rollout timing, and entitlements still differ. Record the product and date alongside the model name.
Does this ChatGPT announcement prove GPT-5.6 Sol is available in Flowith?
No. OpenAI’s ChatGPT, Work, Codex, and API surfaces do not establish a Flowith model mapping or entitlement. Check the live Flowith workspace separately.
Official source
Source check: August 8, 2026. Product versions, rollout state, plans, controls, and model availability can change; use the newest official record for the exact surface you evaluate.