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GoogleGemini 2.5 Flash-LiteVSGoogleGemini 2.5 Pro

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

Our Take

We recommend Gemini 2.5 Pro if you need peak intelligence for reasoning and coding tasks, or the 19.6x cheaper Gemini 2.5 Flash-Lite to optimize your budget for high-volume pipelines. While Gemini 2.5 Pro holds a clear performance lead, it carries a heavy price premium. Choose Gemini 2.5 Pro for complex logic, or Gemini 2.5 Flash-Lite for budget efficiency.
WHY?
Benchmark Calculations & Evidence:
  • Coding Benchmarks: Both models were evaluated on the SWE-bench Verified benchmark. Gemini 2.5 Pro scored 59.6%, while Gemini 2.5 Flash-Lite scored 41.3%.
  • Reasoning Benchmarks: Both models were evaluated on the GPQA Diamond benchmark. Gemini 2.5 Pro scored 84.4%, while Gemini 2.5 Flash-Lite scored 62.5%.
  • Cost Efficiency: Gemini 2.5 Flash-Lite pricing ($0.1/M input, $0.4/M output) is 19.6x cheaper than Gemini 2.5 Pro ($1.25/M input, $10/M output).
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    Model Specs

    Gemini 2.5 Flash-Lite

    Benchmarks & Scores

    Coding (swe-bench-verified)
    41.3%

    multi-file code and clearly defined tasks

    Reasoning (gpqa-diamond)
    62.5%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)19.6x cheaper
    $0.17Input: $0.10 | Output: $0.40
    Context Window
    1.05M tokens
    Model Specs

    Gemini 2.5 Pro

    Benchmarks & Scores

    Coding (swe-bench-verified)Winner (+18.3%)
    59.6%

    multi-file code and clearly defined tasks

    Reasoning (gpqa-diamond)Winner (+21.9%)
    84.4%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    $3.44Input: $1.25 | Output: $10.00
    Context Window
    1.05M tokens

    Frequently Asked Questions about Gemini 2.5 Flash-Lite vs Gemini 2.5 Pro

    Gemini 2.5 Flash-Lite is cheaper than Gemini 2.5 Pro. Gemini 2.5 Flash-Lite has a blended cost of $0.17/1M tokens, which is about 19.6x cheaper than Gemini 2.5 Pro at $3.44/1M tokens.

    Gemini 2.5 Pro is better for coding tasks on this benchmark. It scores 59.6% on swe-bench-verified (multi-file code and clearly defined tasks) compared to Gemini 2.5 Flash-Lite which scores 41.3%.

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