Quick answer
OpenAI updated GPT-5.6 Sol in ChatGPT Plus and Pro on August 6, 2026 and added a slider for choosing how much thought ChatGPT puts into a response. The control is available on web, mobile, and desktop according to the announcement.
The same updated Sol powers both quick answers and deeper reasoning in ChatGPT. Moving the slider changes the reasoning depth of the response; it is not documented as a switch to a separately named model.
This is a ChatGPT control. It does not establish an API parameter, a change to Work or Codex, or availability inside Flowith. Review the GPT-5.6 family page for those separate boundaries.
When to keep the response quick
Use a lower-thought setting when the task is clear, reversible, and inexpensive to check:
- rewriting a short paragraph;
- summarizing material already in the conversation;
- generating a small list of options;
- formatting known information;
- answering a narrow question with an obvious verification path.
The goal is not to minimize thought at all costs. It is to avoid spending extra time on a request that does not benefit from a larger reasoning pass.
When to move the slider up
Use more thought when the task has several dependencies, ambiguous tradeoffs, or a higher cost of omission:
- multi-step planning;
- research synthesis;
- long-form writing with constraints;
- coding and debugging;
- comparing options before a decision;
- reviewing assumptions, edge cases, or failure modes.
OpenAI describes the higher setting as giving Sol more time for a more comprehensive answer. That does not guarantee factual accuracy. Continue to verify source-sensitive claims, calculations, policies, and consequential advice.
A decision table for the thought slider
| Task signal | Start here | Review before accepting |
|---|---|---|
| One clear transformation | Quick | Meaning preserved, requested format followed |
| Several constraints or alternatives | More thought | Assumptions, omissions, tradeoffs |
| Dates, rules, prices, or citations | More thought plus sources | Currentness and source match |
| Code change | More thought plus tests | Diff, tests, edge cases, rollback |
| High-stakes decision | More thought plus qualified review | Evidence, uncertainty, accountable approval |
The slider changes how ChatGPT approaches the answer. It does not replace the validation method appropriate to the task.
One model, more consistent interaction
OpenAI says the updated Sol brings ChatGPT’s quick and deeper experiences closer together. Plus and Pro users should experience a more consistent tone as they ask for additional thought, rather than a shift to a differently named model with a separate style.
That distinction helps when you compare outputs. Record at least:
- the date;
- ChatGPT Plus or Pro;
- GPT-5.6 Sol;
- the chosen thought level;
- the prompt and supplied sources;
- any tools used;
- the acceptance checks.
Without that context, two responses from “Sol” may reflect different reasoning settings or rollout moments.
Keep product controls separate
Do not translate the ChatGPT slider into another surface by name alone:
- Work and Codex: OpenAI says their Sol version did not change in this release.
- OpenAI API: use the current API reasoning and processing documentation; the ChatGPT slider is not an API specification.
- Flowith: verify the live model selector and controls; an OpenAI ChatGPT launch is not a Flowith entitlement.
Use the ChatGPT versus Work and Codex boundary guide before transferring a Sol evaluation across products.
A repeatable workflow
- State the outcome and constraints.
- Start with the quickest setting that can reasonably answer the task.
- Increase thought when the first pass misses dependencies, evidence, or tradeoffs.
- Ask Sol to list assumptions and uncertain claims.
- Validate the result with sources, tests, or human review appropriate to the risk.
- Save the prompt, thought setting, and accepted result when reproducibility matters.
The setting should follow task complexity, not habit.
Frequently asked questions
Who gets the GPT-5.6 Sol thought slider?
OpenAI announced the updated GPT-5.6 Sol and thought slider for ChatGPT Plus and Pro users on web, mobile, and desktop starting August 6, 2026. Check the signed-in product because rollout and entitlement can vary.
Does the slider switch between different models?
OpenAI says the same updated GPT-5.6 Sol powers quick and deeper responses in ChatGPT Plus and Pro. The slider changes how much thought ChatGPT puts into the answer rather than establishing a separate model name.
Does the ChatGPT thought slider configure the OpenAI API?
No API control is established by this ChatGPT announcement. API reasoning and service-tier settings are separate developer contracts that must be checked in the current API documentation.
Did this Sol update also change Work or Codex?
No. OpenAI says the August 6 Sol update is limited to the Chat experience in ChatGPT; the Sol version powering Work and Codex did not change as part of the release.
Related GPT-5.6 guides
- GPT-5.6 Luna access for ChatGPT Free and Go
- ChatGPT Sol versus Work and Codex version boundary
- GPT-5.6 family, pricing, and availability
Official source
Source check: August 8, 2026. Plan access, rollout, interface labels, and product controls can change; verify the signed-in ChatGPT experience before documenting a workflow.