# GPT-6.1 Sol cuts cached input to $0.10 per million tokens

2026-09-29. Standard input and output prices stay put, but repeated context gets cheaper, and that is where agents spend most of their tokens.

OpenAI shipped GPT-6.1 Sol alongside Dots and says it gets close to Astra-level results for a fraction of the price. Standard pricing matches GPT-6 Sol, with input at $2 and output at $10 per million tokens.

The change is in cached input, which falls from $0.20 to $0.10 per million tokens. Agents benefit most, because they re-read the same long context at each step of a task.

Self-hosted agents such as OpenClaw that run on your own API key can see a noticeable drop in cost for long automations. Most of the tokens such an agent consumes are repeated context.

## Why it matters to you

If you pay per token, confirm that prompt caching is switched on for your agent. The lower price applies only to cached reads.

## Sources

- [The Decoder](https://the-decoder.com/gpt-6-1-sol-comes-close-to-astra-at-a-fifth-of-the-price/)
- [FourWeekMBA](https://fourweekmba.com/ai-gpt-61-sol-cached-read-price-change/)