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Claude Sonnet 4 vs Gemini 2.5 Pro: Pricing, Benchmarks & Verdict (2026)

Pricing verified Sep 14, 2026By LLMversusUpdated September 17, 2026View methodology

⚡ Quick Answer

Gemini 2.5 Pro is significantly cheaper at $1.25/$10.00 per million tokens vs $3.00/$15.00. Gemini 2.5 Pro is stronger for coding with a coding ELO of 1350 vs 1305. Gemini 2.5 Pro ranks higher overall with an Arena ELO of 1340 vs 1280. Gemini 2.5 Pro offers a larger 1049K context window vs 200K.

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureClaude Sonnet 4Gemini 2.5 Pro
ProviderAnthropicGoogle
Input Price / 1M tokens$2.00$1.25
Output Price / 1M tokens$10.00$10.00
Context Window
200K
1.048576M
Max Output Tokens
64,000
65,536
Arena ELO
1,473
1,445
Coding ELO
1,473
1,445
TTFT (ms)
320
400
Tokens/sec
78
70
MultimodalYesYes
JSON ModeYesYes
Function CallingYesYes
VisionYesYes
When to Use Claude Sonnet 4

Choose Claude Sonnet 4 when you need: best-in-class coding performance, 200k context window, excellent instruction following. It excels at coding, analysis, long-context, agents tasks.

Strengths:

  • Best-in-class coding performance
  • 200K context window
  • Excellent instruction following

Best for:

codinganalysislong-contextagents
When to Use Gemini 2.5 Pro

Choose Gemini 2.5 Pro when you need: 1m token context window, excellent reasoning capabilities, strong coding performance, native multimodal support. It excels at coding, reasoning, long-context, multimodal tasks. It is also the more cost-effective option between the two. Its 1049K context window is larger, making it better for long-document processing.

Strengths:

  • 1M token context window
  • Excellent reasoning capabilities
  • Strong coding performance
  • Native multimodal support

Best for:

codingreasoninglong-contextmultimodal

Frequently Asked Questions

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