whichLlmmodel
Back to Dashboard

DeepSeekDeepSeek V4 ProVSGoogleGemini 3.1 Flash-Lite

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

Our Take

We recommend DeepSeek V4 Pro if you need peak intelligence for complex complex codebases, multi-file repositories, and architectural planning, or the 3.9x cheaper Gemini 3.1 Flash-Lite if your workflow is limited to scripting single-file apps or clearly defined functions. While DeepSeek V4 Pro holds a major reasoning advantage, Gemini 3.1 Flash-Lite is optimized for high-volume budget pipelines. Choose DeepSeek V4 Pro for architectural codebase planning, or Gemini 3.1 Flash-Lite to maximize your budget for basic scripts.
▶WHY?
Benchmark Calculations & Evidence:
  • Coding Evaluation: DeepSeek V4 Pro was evaluated on SWE-bench Pro (scoring 52.1%), while Gemini 3.1 Flash-Lite was evaluated on LiveCodeBench (scoring 72%).
  • Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. DeepSeek V4 Pro scored 88%, while Gemini 3.1 Flash-Lite scored 82.2%.
  • Cost Efficiency: Gemini 3.1 Flash-Lite pricing ($0.25/M input, $1.5/M output) is 3.9x cheaper than DeepSeek V4 Pro ($1.74/M input, $3.48/M output).
    • Was this recommendation helpful?
    Model Specs

    DeepSeek V4 Pro

    Open SourceAPI Available
    Website🤗HF

    Benchmarks & Scores

    Coding (swe-bench-pro)
    52.1%

    complex codebases, multi-file repositories, and architectural planning

    Reasoning (gpqa-diamond)Winner (+5.8%)
    88%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)
    $2.17Input: $1.74 | Output: $3.48
    Context Window
    1.05M tokens
    Model Specs

    Gemini 3.1 Flash-Lite

    Website

    Benchmarks & Scores

    Coding (live-code-bench)
    72%

    scripting single-file apps or clearly defined functions

    Reasoning (gpqa-diamond)
    82.2%

    graduate-level science QA

    Cost & Context

    Cost (per 1M tokens)3.9x cheaper
    $0.56Input: $0.25 | Output: $1.50
    Context Window
    1.05M tokens
    Read our data collection methodology

    Frequently Asked Questions about DeepSeek V4 Pro vs Gemini 3.1 Flash-Lite

    Gemini 3.1 Flash-Lite is cheaper than DeepSeek V4 Pro. Gemini 3.1 Flash-Lite has a blended cost of $0.56/1M tokens, which is about 3.9x cheaper than DeepSeek V4 Pro at $2.17/1M tokens.

    For coding tasks, DeepSeek V4 Pro scores 52.1% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning), while Gemini 3.1 Flash-Lite scores 72% on live-code-bench (scripting single-file apps or clearly defined functions).

    Related Matchups

    Explore similar comparisons for DeepSeek V4 Pro and Gemini 3.1 Flash-Lite.

    Browse More Comparisons
    DeepSeekDeepSeek V4 Pro
    VS
    OpenAIGPT-5.5
    Compare Specs
    GoogleGemini 3.1 Flash-Lite
    VS
    OpenAIGPT-5.6 Sol
    Compare Specs
    DeepSeekDeepSeek V4 Pro
    VS
    OpenAIGPT-5.6 Terra
    Compare Specs

    Do you want to find a model for your constraints?

    Use our interactive model finder to filter LLMs by reasoning capability, coding performance, cost, and context length.

    Open Model Finder