Gpt 6 1 Terra

Facts

Announced: GPT-6.1 Terra, a major update to GPT-5.6 Terra released as 6.1 while skipping 6.0 (release on October 27, 2026, Japan time) · 2026-10-27

Noted: API pricing is $1 per million input tokens, $0.05 cached input, and $5 output, held to half the standard price of GPT-6.1 Sol · 2026-10-27
Noted: trained on data up to June 1, 2026, with a 1.05 million token context window and 128,000 token maximum output · 2026-10-27
Noted: matched GPT-6 Astra's score on OpenAI's OSWorld 2.1 PC operation test at lower cost while running three times faster · 2026-10-27

Connections

Produces of: Openai

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All coverage

Oct 27

OpenAI Releases GPT-6.1 Terra as a Cheaper, Faster Model

OpenAI released GPT-6.1 Terra on October 27, 2026, Japan time. The model is a major update to GPT-5.6 Terra, released as 6.1 while skipping 6.0. OpenAI offers four model tiers: the flagship Astra, high-performance Sol, balanced Terra, and low-cost Luna. GPT-6.1 Terra is available via API and to Plus, Pro, Enterprise, and Edu users in ChatGPT Work and Codex. API pricing is $1 per million input tokens, $0.05 cached input, and $5 output, held to half the standard price of GPT-6.1 Sol, according to ASCII.jp. The model was trained on data up to June 1, 2026, with a context window of 1.05 million tokens and maximum output of 128,000 tokens. Reasoning depth has six levels: none, low, medium, high, xhigh, and max. OpenAI says GPT-6.1 Terra handles image understanding and PC operation at lower cost than higher-end models.