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Put models side by side on price, context, capabilities, and benchmarks.
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family at this point in the lineup, supporting text, image, and file input with reasoning and a 1M-token context window. It is aimed at the highest-difficulty coding, analysis, and agentic tasks.
Gemini 3.1 Pro Preview is Google's advanced reasoning model improving long-horizon stability and tool orchestration over Gemini 3 Pro, with a new medium thinking level to balance cost, speed, and performance. It excels at agentic coding, structured planning, multimodal analysis, and workflow automation for autonomous agents and enterprise tasks.
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.
Intelligence
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
