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Claude Sonnet 4.6 vs Gemini 3.6 Flash — Price, Context, and Capability Compared

Verdict

Claude Sonnet 4.6 costs 1.8× more per blended million tokens than Gemini 3.6 Flash. Gemini 3.6 Flash has the larger context window (1,000,000 tokens). Default to Gemini 3.6 Flash unless you specifically need Claude Sonnet 4.6's edge.

Spec comparison

Claude Sonnet 4.6Gemini 3.6 Flash
Price (input)$3.00/M$1.50/M
Price (output)$15.00/M$9.00/M
Blended price$6.00/M$3.38/M
Context window300,000 tokens1,000,000 tokens
Max output64,000 tokens64,000 tokens
Modalitiestext, visiontext, vision, audio
Reasoning modeYesYes
Released2026-032026-06
Speed76 t/s114 t/s

Cost at scale (3:1 blended)

Tokens / monthClaude Sonnet 4.6Gemini 3.6 FlashDelta
1,000,000$6.00$3.38$2.63 (1.8×)
10,000,000$60.00$33.75$26.25 (1.8×)
100,000,000$600.00$337.50$262.50 (1.8×)

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 3.6 Flash if…

  • Faster than Gemini 3.5 Flash
  • Top-tier coding and agentic performance for its price
  • 1M-token context
  • Latency-sensitive coding and agentic tasks that still need a huge context window.

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FAQ

Is Claude Sonnet 4.6 cheaper than Gemini 3.6 Flash?

Gemini 3.6 Flash is cheaper, at $3.38 per million blended tokens vs $6.00 for Claude Sonnet 4.6.

Which has the bigger context window, Claude Sonnet 4.6 or Gemini 3.6 Flash?

Gemini 3.6 Flash has the larger context window: 1,000,000 tokens vs 300,000.

Can Claude Sonnet 4.6 replace Gemini 3.6 Flash for coding?

Both are viable for coding. Best intelligence-per-dollar in the Claude lineup (Claude Sonnet 4.6) vs Faster than Gemini 3.5 Flash (Gemini 3.6 Flash) — pick based on which strength matters more for your workload.

Which is faster, Claude Sonnet 4.6 or Gemini 3.6 Flash?

Gemini 3.6 Flash is faster: 114 t/s vs 76 t/s, measured on our speed benchmarks.

Related

Claude Sonnet 4.6 pricingGemini 3.6 Flash pricingvs Grok 4.3vs Gemini 3.1 Provs Claude Sonnet 4vs Claude Sonnet 4.5Premium model tests

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