Unverified50% confidenceFactExact time

The participating models included Opus 5.5 and Fable 5.1 accessed via Claude Code, GPT-6-Astra and GPT-6.1-Sol accessed via Codex, and Gemini 4 Argon (High) and Gemini 3.8 Flash (High) accessed via Gemini CLI.

1

Sources

50%

Confidence

Short-term (~14 days)

Relevance

10/19/2026

First Seen

Valid until: 11/2/2026

Sources

Six AI Models Play Chess via CLI, No Checkmates Reveal the Truth About Automation Reliability

Related Entities

Opus 5.5model Fable 5.1model GPT-6-Astramodel GPT-6.1-Solmodel Gemini 4 Argonmodel Gemini 3.8 Flashmodel

Related Claims

UnverifiedGemini 4 Argon's score on FrontierCode 1.1 is on par with GPT-6 Sol.79% similar UnverifiedThe eight models tested include GPT-6 Luna, Claude Haiku 5.5, Gemini 3.5 Flash-Lite, Qwen 3 Next 80B, Gemma 4 31B, GPT-6 Sol, Claude Sonnet 5, and Gemini 3.7 Flash, with each model running 107 investigations per track.77% similar UnverifiedIn the test, Claude Opus 5.5 and GPT-6.1 Sol took the command-line Agent path, able to open pages to check by themselves and go back to revise the code; Gemini 4 Argon at the time could only produce a one-shot draft in the Gemini App, with no permission to execute and review.76% similar

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