Video briefing
GPT-6 Astra vs Claude Fable 5.1 vs Gemini 3.8 Flash: Frontier Math, Coding, and Cost
GPT-6 Astra · Claude Fable 5.1 · Gemini 3.8 Flash 3:59
The first week of September 2026 saw a three-way frontier-model clash between Anthropic's Claude Fable 5.1, OpenAI's GPT-6 Astra, and Google DeepMind's Gemini 3.8 Flash. We dive into the benchmarks to see where each model truly stands, comparing claims from commentators against the raw scores in frontier math, coding, and agentic engineering.
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