Model A claims the integration maps to models available under your specific ChatGPT tier rather than a fixed set, and mentions Codex, while Model B follows specific routing tiers like GPT-6 Astra.
Model A claims it maps to the models available under your specific ChatGPT tier, including Codex.
Gemini
“the models available to you under your specific tier of ChatGPT subscription”
Model B states it routes specific models like GPT-6 Astra according to official documentation.
DeepSeek
“, linking a ChatGPT subscription causes OpenAI model usage to be billed to your ChatGPT plan instead of Amp credits.”
How to verify: Check official Amp documentation on ChatGPT subscription linking behavior.