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OpenAI releases GPT-6.1 Sol, near GPT-6 Astra on coding at a fifth of the price

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Source: OpenAI: Introducing GPT-6.1 Sol

OpenAI released GPT-6.1 Sol, which it says nearly matches GPT-6 Astra on agentic coding, computer use and professional work at one-fifth of Astra’s standard token prices: $2 input and $10 output per million tokens, with cached input at $0.10. OpenAI said it matches Astra on the DeepSWE v1.1 coding benchmark at roughly one-fifth of the cost.

Why it matters

A week after GPT-6 Sol, OpenAI offered near-Astra coding performance at the same price, with cached input at $0.10 per million tokens for agent work.

When
29 Sep 2026
ID
WTA-N-2026-0135
Who
OpenAI

Summary by wheresthe.ai, from OpenAI. Checked against the source on 9 Oct 2026.

Read the original at OpenAI

Source copy: download the page text as saved on 18 Oct 2026 (PDF). Also held by the Internet Archive.

Earlier in this Storyline: What led hereOpenAI releases GPT-6 Sol and Luna and halves their API prices

Cite this story

WTA-N-2026-0135: “OpenAI releases GPT-6.1 Sol, near GPT-6 Astra on coding at a fifth of the price.” wheresthe.ai, 29 Sep 2026. https://wheresthe.ai/d/openai-gpt-6-1-sol-release-2026-09/ (source: OpenAI: Introducing GPT-6.1 Sol).

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