What models does Amp’s new ChatGPT-linked subscription actually include?
Historical consensus 2026-08-18Active
Runs Weekly on Tuesday at 09:00 (Europe/Berlin)LastNext
Movement at this check
Changed since last check
The breakdown of model assignments per routing mode changed significantly. Low mode changed from GPT-5.6 Terra to GLM-5.2 + GPT-5.6 Sol; High mode oracle changed from GPT-5.6 Sol to Claude Fable 5; Review changed from GPT-5.6 Terra to GPT-5.5; and specific routes for Puck/Search and Librarian were added while general routing details were updated.
Amp’s ChatGPT-linked subscription does not mean you get the full set of ChatGPT/OpenAI models inside Amp. It mainly lets Amp route certain modes to the GPT-5.6 family using your linked ChatGPT entitlement, while Amp’s own plan still handles the app features and usage limits.ampcodeampcode
In practical terms, the linked subscription is used for these Amp routes:
Low mode: GLM-5.2 for the main agent, with GPT-5.6 Sol for the oracle.ampcode
Medium mode:GPT-5.6 Sol for both main agent and oracle.ampcode
High mode:GPT-5.6 Sol for the main agent, with Claude Fable 5 still appearing for the oracle in current routing.ampcode
So the short answer is: the ChatGPT-linked subscription mainly covers GPT-5.6 Sol/Terra routes inside Amp, not every model Amp can use. In particular, it does not automatically include models like Claude Fable 5 or other non-OpenAI providers used by some Amp modes.ampcodeampcode
One important caveat: Amp’s routing appears to evolve over time, so exact model assignment can vary by mode and update.
Differences
2 notable differences (2 contradictions)
across 3 models.
contradiction · minor detail
Whether Low mode replaces GLM-5.2 with GPT-5.6 Terra when ChatGPT is linked.
Low mode agent switches from GLM-5.2 to GPT-5.6 Terra with a linked ChatGPT sub.
Gemini, Grok
“(serving as the main fast agent, replacing the default GLM-5.2).”
Low mode main agent remains GLM-5.2 with GPT-5.6 Sol as oracle.
OpenAI
How to verify: Check Amp's latest modes documentation regarding model routing for Low mode with a linked ChatGPT account.
contradiction · minor detail
Whether High mode oracle uses GPT-5.6 Sol or Claude Fable 5 with a linked ChatGPT sub.
High mode uses GPT-5.6 Sol for both main agent and oracle when ChatGPT is linked.
Gemini, Grok
“the main agent (with extra-high reasoning) and the auxiliary Oracle”
High mode oracle continues to use Claude Fable 5.
OpenAI
How to verify: Check Amp's routing settings for High mode oracle under a linked ChatGPT plan.
Best answerOpenAI
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Since tracking began: The breakdown of which model powers which specific route/mode (e.g., Low mode oracle vs. main agent, Puck, Compaction, Review) is specified in much finer operational detail in the new consensus, though the core conclusion remains that linked ChatGPT primarily covers GPT-5.6 routes and not non-OpenAI models.
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Agreement over time
How strongly the models support the same claims. Every point links to its run below.
Checks
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Meaningful change
90/100 agreement
The response was reformatted from a table to bullet points with slightly streamlined wording, but all core facts, covered models, modes, and exclusions remain identical.
The exact model routing breakdown substantially changed: Low main agent shifted from GLM-5.2 to GPT-5.6 Terra, High oracle shifted from Claude Fable 5 to GPT-5.6 Sol, and Code review shifted from GPT-5.5 to GPT-5.6 Terra. Additionally, the new answer specifies that Low/Med/High workflows are covered, while Ultra mode uses Claude Fable and Amp credits.
The breakdown of model assignments per routing mode changed significantly. Low mode changed from GPT-5.6 Terra to GLM-5.2 + GPT-5.6 Sol; High mode oracle changed from GPT-5.6 Sol to Claude Fable 5; Review changed from GPT-5.6 Terra to GPT-5.5; and specific routes for Puck/Search and Librarian were added while general routing details were updated.
The new answer provides more specific details about how the GPT-5.6 variants (Terra and Sol) map to different Amp usage modes (Low, Medium, High) and clarifies that non-OpenAI routes like Claude Fable 5 in Ultra mode are excluded.
3 AI models
answered this question independently on 2026-08-18. A judge from a different model family
then cross-checked the answers, scored how far they agree and flagged where they differ. The question is re-checked weekly, and every earlier version stays on this page.
AI models can make mistakes – verify important information against the sources above.
