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Google

Gemini 2.5 Pro

VS
Google

Gemini 3 Flash

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

Decision Recommendation

👑 Editorial Verdict: Gemini 3 Flash strictly dominates Gemini 2.5 Pro across all major dimensions. It is not only more cost-effective (blended cost of $1.13 vs $3.44 per 1M tokens) but also delivers superior coding accuracy (34.6% vs 0% on SWE-bench) and faster generation speeds (159 tps vs 117 tps). Unless you have platform lock-in, Gemini 3 Flash is the clear and optimal choice for all development workloads.

Model Specs

Gemini 2.5 Pro

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
84.4%

Cost & Performance

Cost (per 1M tokens)
$3.44Input: $1.25 | Output: $10.00
Speed
117 tps
Context Window
1M tokens
Model Specs

Gemini 3 Flash

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
34.6%
Reasoning (gpqa-diamond)Winner (+6.0%)
90.4%

Cost & Performance

Cost (per 1M tokens)3.1x cheaper
$1.13Input: $0.50 | Output: $3.00
Speed1.4x faster
159 tps
Context Window
1M tokens
Read our data collection methodology

Frequently Asked Questions

Gemini 3 Flash is cheaper than Gemini 2.5 Pro. Gemini 3 Flash has a blended cost of $1.13/1M tokens, which is about 3.1x cheaper than Gemini 2.5 Pro at $3.44/1M tokens.

Gemini 3 Flash is faster than Gemini 2.5 Pro. Gemini 3 Flash generates 159 tokens per second (tps) compared to Gemini 2.5 Pro which generates 117 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 Pro which scores N/A.

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