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2026/9/30 15:17 (UTC+8) · New Model · OpenAI 🚀 gpt-6.1-sol is live, with cache reads at half the price of gpt-6-sol OpenAI’s upgraded Sol, launched at DevDay on 29 September, scores 52 on the Artificial Analysis Intelligence Index: 4 points above GPT-6 Sol and just 1 point below GPT-6 Astra. Pricing (per 1M tokens, all four billing items match the provider):
  • Input $2 / output $10, the same as gpt-6-sol
  • Cache read $0.10, down from $0.20 on gpt-6-sol
  • Cache write $2.50; requests with more than 272K input tokens are billed at the second tier
Savings come through our top-up promotions. Migrating from gpt-6-sol is a model-name change; note that reasoning effort no longer supports none, and the lowest level is low. 📖 Benchmarks, tier pricing and code samples: GPT-6.1 Sol Is Live
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