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

- Company: TestingCatalog (testingcatalog.com)
- Announced: 2026-09-30T13:24:16+00:00
- Category: model-update
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://www.testingcatalog.com/openai-launches-gpt-6-1-sol-at-one-fifth-of-astra-pricing/
- Record: https://forck.live/items/15391-openai-launches-gpt-6-1-sol-at-one-fifth-of-astra-pricing
- Subject: AI models / agents / unreleased features
- Models affected: GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol, Opus 5.5
- Pricing: $2 per million input tokens, $0.10 per million cached input tokens and $10 per million output tokens

OpenAI released GPT-6.1 Sol, an upgrade to GPT-6 Sol that delivers near-GPT-6 Astra performance on 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. The model is available to Plus, Pro, Business, Enterprise and Edu users in ChatGPT Work and Codex, and via the API as gpt-6.1-sol at $2 per million input tokens, $0.10 per million cached input tokens, and $10 per million output tokens.

## Evidence

Verbatim from https://www.testingcatalog.com/openai-launches-gpt-6-1-sol-at-one-fifth-of-astra-pricing/:

> 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.

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Record: https://forck.live/items/15391-openai-launches-gpt-6-1-sol-at-one-fifth-of-astra-pricing
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