Unverified50% confidenceOpinionExact time

Simon Willison points out that GPT-6.1 Terra's positioning in OpenAI's product line is similar to that of the Sonnet model in Anthropic's model lineup

1

Sources

50%

Confidence

Medium-term (~90 days)

Relevance

10/27/2026

First Seen

Valid until: 1/25/2027

Sources

GPT-6.1 Terra In-Depth: Positioning a Mid-Tier Model for Vision and Computer Use

Related Entities

Simon Willisonperson GPT-6.1 Terramodel Anthropiccompany Sonnetmodel

Related Claims

UnverifiedOpenAI's official website published an article titled "Introducing GPT-6.1 Terra," unveiling a GPT-6.1 model named Terra.77% similar UnverifiedSimon Willison compiled a comparison grid covering all reasoning effort levels across OpenAI's current frontier product line, including GPT-6 Astra, GPT-6.1 Sol, GPT-6.1 Terra, and GPT-6 Luna76% similar UnverifiedSimon Willison observed that the keywords OpenAI chose for GPT-6.1 Terra are visual reasoning and computer use, rather than general intelligence or reasoning depth74% similar VerifiedThe GPT series (OpenAI) and Claude (Anthropic) are closed-source models.71% similar

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