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OpenAI's Tibo Sottiaux said on August 17, 2026 that GPT-5.6 Sol's 1M-token context option in Codex now works through ChatGPT accounts, not only API keys. OpenAI's docs list a 1,050,000-token API window for the model and a model_context_window setting, but no ChatGPT-account rule. GPT-6.1 Sol is now Codex's recommended model.
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