Compare Claude Sonnet 5 from Anthropic and Gemini 3.1 Pro Preview from Google on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
Claude Sonnet 5
Gemini 3.1 Pro PreviewClaude Sonnet 5 is the next generation of Anthropic's Sonnet model family. It is a drop-in upgrade for Claude Sonnet 4.6 with three behavior changes: adaptive thinking is on by default, manual extended thinking now returns a 400 error (it was deprecated on Claude Sonnet 4.6), and setting sampling parameters (temperature, top_p, top_k) to non-default values returns a 400 error
Gemini 3.1 Pro Preview is designed to further optimize the performance and reliability of the Gemini 3 Pro series, offering improved reasoning capabilities, greater token efficiency, and a more robust, factually consistent user experience. It is optimized for software-engineering behaviors and usability, and is also suitable for agent workflows that require precise tool invocation and reliable multi-step execution, enabling stable operation across a variety of real-world scenarios.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
Claude Sonnet 5: $10/M output tokens; Gemini 3.1 Pro Preview: $12/M. Use the cost calculator above to estimate your own workload.
Claude Sonnet 5: 1521; Gemini 3.1 Pro Preview: 1521 (LMArena coding leaderboard).
Claude Sonnet 5: 1.0s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Claude Sonnet 5 accepts 1,000,000 and Gemini 3.1 Pro Preview accepts 1,048,576 input tokens. Maximum output per request is 128,000 tokens on Claude Sonnet 5 and 65,536 tokens on Gemini 3.1 Pro Preview.
Claude Sonnet 5 at 7839.1 tok/s and Gemini 3.1 Pro Preview at 86.6 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Claude Sonnet 5 accepts text, image and PDF input and supports thinking, tool calling, function calling and structured outputs; Gemini 3.1 Pro Preview accepts text, image, video, audio and PDF input and supports thinking, tool calling, function calling, structured outputs, web search, deep search and long context.
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