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Tutorial: Compare GPT-4o vs Gemini 2.5 Pro on the Same Prompt

Learn to use Studio's side-by-side model comparison mode to evaluate GPT-4o, Gemini 2.5, and DeepSeek R1 on a single engineering prompt — with token cost breakdown.

Learn to use Studio's side-by-side model comparison mode to evaluate GPT-4o, Gemini 2.5, and DeepSeek R1 on a single engineering prompt — with token cost breakdown.

Why Multi-Model Comparison Matters

Different models excel at different tasks. GPT-4o handles complex reasoning well; Gemini 2.5 Pro has a 1M token context window for massive codebases; DeepSeek R1 is cost-effective for repetitive extraction tasks. Comparing all three on your specific prompt prevents costly over-engineering.

Launching the Comparison Mode

In Studio, click "Multi-Model Compare" in the toolbar. Enable at least two providers. Paste your prompt and click "Run All". Studio sends identical inputs to every enabled model in parallel and displays structured responses side by side.

Interpreting the Results

Each response card shows: latency (ms), input/output token count, estimated cost per 1M tokens at current provider pricing, and a quality score computed via Studio's automated rubric evaluation. Export results as CSV for stakeholder reporting.

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