OpenAI launches GPT-6.1 Sol, says it nearly matches GPT-6 Astra and costs less

September 29, 2026 Aisha Malik

OpenAI says GPT-6.1 Sol delivers significant improvements over GPT-6 Sol across complex professional tasks, including code writing and debugging, document understanding, and executing multistep business workflows.

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OpenAI expands ChatGPT’s plug-ins with app-like interfaces and automations
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