← Back to all comparisons

Claude Sonnet 4.6 vs Gemini 3.1 Pro — Price, Context, and Capability Compared

Verdict

Claude Sonnet 4.6 costs 1.3× more per blended million tokens than Gemini 3.1 Pro. Gemini 3.1 Pro has the larger context window (2,000,000 tokens). Default to Gemini 3.1 Pro unless you specifically need Claude Sonnet 4.6's edge.

Spec comparison

Claude Sonnet 4.6Gemini 3.1 Pro
Price (input)$3.00/M$2.00/M
Price (output)$15.00/M$12.00/M
Blended price$6.00/M$4.50/M
Context window300,000 tokens2,000,000 tokens
Max output64,000 tokens64,000 tokens
Modalitiestext, visiontext, vision, audio
Reasoning modeYesYes
Released2026-032026-02
Speed76 t/s55 t/s

Cost at scale (3:1 blended)

Tokens / monthClaude Sonnet 4.6Gemini 3.1 ProDelta
1,000,000$6.00$4.50$1.50 (1.3×)
10,000,000$60.00$45.00$15.00 (1.3×)
100,000,000$600.00$450.00$150.00 (1.3×)

Choose Claude Sonnet 4.6 if…

  • Best intelligence-per-dollar in the Claude lineup
  • Fast enough for interactive coding agents
  • Reliable structured output
  • Enterprise workloads that need Opus-adjacent quality at Sonnet pricing.

Choose Gemini 3.1 Pro if…

  • Largest context window of any current model (2M tokens)
  • Native audio and video understanding
  • Google Search grounding
  • Whole-codebase, whole-document, or long-video analysis in a single request.

Run this exact matchup right now

Send the same prompt to Claude Sonnet 4.6 and Gemini 3.1 Pro side by side and see the outputs yourself.

Try Claude Sonnet 4.6 vs Gemini 3.1 Pro Free

FAQ

Is Claude Sonnet 4.6 cheaper than Gemini 3.1 Pro?

Gemini 3.1 Pro is cheaper, at $4.50 per million blended tokens vs $6.00 for Claude Sonnet 4.6.

Which has the bigger context window, Claude Sonnet 4.6 or Gemini 3.1 Pro?

Gemini 3.1 Pro has the larger context window: 2,000,000 tokens vs 300,000.

Can Claude Sonnet 4.6 replace Gemini 3.1 Pro for coding?

Both are viable for coding. Best intelligence-per-dollar in the Claude lineup (Claude Sonnet 4.6) vs Largest context window of any current model (2M tokens) (Gemini 3.1 Pro) — pick based on which strength matters more for your workload.

Which is faster, Claude Sonnet 4.6 or Gemini 3.1 Pro?

Claude Sonnet 4.6 is faster: 76 t/s vs 55 t/s, measured on our speed benchmarks.

Related

Claude Sonnet 4.6 pricingGemini 3.1 Pro pricingvs Grok 4.3vs Claude Sonnet 4vs Claude Sonnet 4.5vs Claude Opus 4.8Premium model tests

Pricing verified 2026-04-06. Specs verified 2026-08-08.