OpenAI launches GPT-6.1 Sol at one-fifth of Astra pricing

OpenAI has released GPT‑6.1 Sol, an upgrade that brings near-GPT‑6 Astra performance to agentic coding, computer use and professional workflows at one-fifth of Astra’s standard input and output token prices. Cached input costs $0.10 per million tokens, 95% less than standard input and half the cached-input price of GPT‑6 Sol, giving agents that reuse context a much cheaper path to capable long-running work. The largest gains appear in demanding software and business tasks. On DeepSWE v1.1, GPT‑6.1 Sol matched GPT‑6 Astra at roughly one-fifth of the cost and beat GPT‑6 Sol’s best score by 6.4 percentage points at lower reasoning effort and cost.