# MarkTechPost — OpenAI Launches GPT-6.1 Terra, Halving GPT-6.1 Sol’s API Price for Agent Work

- Company: MarkTechPost (marktechpost.com)
- Announced: 2026-10-27T02:45:27+00:00
- Category: not stated
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://www.marktechpost.com/2026/10/26/openai-gpt-6-1-terra/
- Record: https://forck.live/items/28081-openai-launches-gpt-6-1-terra-halving-gpt-6-1-sol-s-api-price-for-agent-work
- Subject: Reporting

OpenAI has released GPT-6.1 Terra , a fast model for visual reasoning, computer use and writing. It replaces GPT-5.6 Terra and is live in the API as gpt-6.1-terra . Standard pricing is $1 per million input tokens and $5 per million output tokens . For teams automating screens, forms and documents at volume, GPT-6.1 Terra changes the cost math. TL;DR Size: 1.05M-token context, 128K max output. Runs on: OpenAI-hosted only (API, ChatGPT Work, Codex). Closed weights. Performance: Near GPT-6.1 Sol and GPT-6 Astra on vision and computer use, at lower cost. Best: 85.5% on MMMU-Pro (Vision) at max effort, 1.2 points behind GPT-6 Astra. Worst: 50.3% on Terminal-Bench 4.0, behind GPT-6.1 Sol (55.9%) and Claude Sonnet 5.5 (70.6%). What is GPT-6.1 Terra? GPT-6.1 Terra is an OpenAI reasoning model built for high-volume visual and computer-use work. It accepts text and image input and returns text . The context window is 1,050,000 tokens, with up to 128,000 output tokens. Its knowledge cutoff is June 1, 2026. Reasoning effort runs from none to max , with medium as the default. Tool calling requires the Responses API. …

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Record: https://forck.live/items/28081-openai-launches-gpt-6-1-terra-halving-gpt-6-1-sol-s-api-price-for-agent-work
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