GPT-6.1 Sol Is Out: Near-Astra Performance at One-Fifth the Price OpenAI released GPT-6.1 Sol, a model priced at $2 per million input tokens and $10 per million output tokens, which byteiota reports is 5x cheaper than Astra while delivering near-Astra performance. The release covers what changed and how to migrate an agent stack to the new model. GPT-6.1 Sol delivers near-Astra performance at $2/$10 per million tokens—5x cheaper than Astra. What changed and how to migrate your agent stack. The post GPT-6.1 Sol Is Out: Near-Astra Performance at One-Fifth the Price appeared first on byteiota .