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Anthropic

Claude Sonnet 4.6

VS
Google

Gemini 2.5 Flash

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Claude Sonnet 4.6 is the premium intelligence choice, scoring 0.0% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: Gemini 2.5 Flash is 7.1x cheaper to run and delivers 4.1x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Gemini 2.5 Flash offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Claude Sonnet 4.6 fully justifies the cost.

Model Specs

Claude Sonnet 4.6

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)Winner (+11.6%)
79.9%

Cost & Performance

Cost (per 1M tokens)
$6.00Input: $3.00 | Output: $15.00
Speed
54.3 tps
Context Window
1M tokens
Model Specs

Gemini 2.5 Flash

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
68.3%

Cost & Performance

Cost (per 1M tokens)7.1x cheaper
$0.85Input: $0.30 | Output: $2.50
Speed4.1x faster
221 tps
Context Window
1M tokens
Read our data collection methodology

Frequently Asked Questions

Gemini 2.5 Flash is cheaper than Claude Sonnet 4.6. Gemini 2.5 Flash has a blended cost of $0.85/1M tokens, which is about 7.1x cheaper than Claude Sonnet 4.6 at $6.00/1M tokens.

Gemini 2.5 Flash is faster than Claude Sonnet 4.6. Gemini 2.5 Flash generates 221 tokens per second (tps) compared to Claude Sonnet 4.6 which generates 54.3 tokens per second.

Coding benchmark scores are not currently recorded for these models.

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