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Google

Gemini 2.5 Flash

VS
Google

Gemini 3 Flash

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

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Gemini 3 Flash is the premium intelligence choice, scoring 34.6% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: Gemini 2.5 Flash is 1.3x cheaper to run and delivers 1.4x 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 Gemini 3 Flash fully justifies the cost.

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)1.3x cheaper
$0.85Input: $0.30 | Output: $2.50
Speed1.4x faster
221 tps
Context Window
1M tokens
Model Specs

Gemini 3 Flash

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
34.6%
Reasoning (gpqa-diamond)Winner (+22.1%)
90.4%

Cost & Performance

Cost (per 1M tokens)
$1.13Input: $0.50 | Output: $3.00
Speed
159 tps
Context Window
1M tokens
Read our data collection methodology

Frequently Asked Questions

Gemini 2.5 Flash is cheaper than Gemini 3 Flash. Gemini 2.5 Flash has a blended cost of $0.85/1M tokens, which is about 1.3x cheaper than Gemini 3 Flash at $1.13/1M tokens.

Gemini 2.5 Flash is faster than Gemini 3 Flash. Gemini 2.5 Flash generates 221 tokens per second (tps) compared to Gemini 3 Flash which generates 159 tokens per second.

Gemini 3 Flash is better for coding tasks. It scores 34.6% on coding evaluations (swe-bench-pro) compared to Gemini 2.5 Flash which scores N/A.

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