Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning): The Ultimate Performance & Pricing Comparison

Deep dive into reasoning, benchmarks, and latency insights.

The Final Verdict in the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) Showdown

After a comprehensive analysis, Gemini 1.0 Pro emerges as the superior choice for users prioritizing raw intelligence and reasoning. However, Gemini 2.5 Flash (Reasoning) remains a highly competitive option, especially for scenarios demanding faster response times and cost-efficiency. This detailed Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) comparison will break down every critical metric to help you make the best decision.

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Model Snapshot

Key decision metrics at a glance.

Gemini 1.0 Pro

Google

Reasoning: 6
Coding: 6
Multimodal: 1
Long Context: 1
Blended Price / 1M tokens: $0.015
P95 Latency: 1000ms
Tokens per second: —

Gemini 2.5 Flash (Reasoning)

Google

Reasoning: 7
Coding: 2
Multimodal: 2
Long Context: 3
Blended Price / 1M tokens: $0.001
P95 Latency: 1000ms
Tokens per second: 289.408tokens/sec

Overall Capabilities

The capability radar provides a holistic view of the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) matchup. This chart illustrates each model's strengths and weaknesses at a glance, forming a cornerstone of our Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) analysis.

This radar chart visually maps the core capabilities (reasoning, coding, math proxy, multimodal, long context) of `Gemini 1.0 Pro` vs `Gemini 2.5 Flash (Reasoning)`.

Benchmark Breakdown

For a granular look, this chart directly compares scores across standardized benchmarks. In the critical MMLU Pro test, a key part of the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) debate, Gemini 1.0 Pro scores 60 against Gemini 2.5 Flash (Reasoning)'s 70. This data-driven approach is essential for any serious Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) comparison.

This grouped bar chart provides a side-by-side comparison for each benchmark metric.

Speed & Latency

Speed is a crucial factor in the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) decision for interactive applications. The metrics below highlight the trade-offs you should weigh before shipping to production.

Time to First Token

Gemini 1.0 Pro300ms

Gemini 2.5 Flash (Reasoning)300ms

Tokens per Second

Gemini 1.0 Pro46

Gemini 2.5 Flash (Reasoning)289.408

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The Economics of Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning)

Power is only one part of the equation. This Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) pricing analysis gives you a true sense of value.

Pricing Breakdown

Compare input and output pricing at a glance.

Real-World Cost Scenario

To process 1M input tokens and generate 250k output tokens, Gemini 1.0 Pro would cost $0.018, whereas Gemini 2.5 Flash (Reasoning) would cost $0.001. This practical calculation is vital for any developer considering the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) choice.

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Which Model Wins the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) Battle for You?

Choose Gemini 1.0 Pro if...

Cost is a secondary concern to power in your Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) decision.

You need the most advanced reasoning capabilities available.

Your use case demands cutting-edge AI performance.

Choose Gemini 2.5 Flash (Reasoning) if...

You need a highly responsive model for user-facing applications.

Your budget is a primary consideration in the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) choice.

You are developing at scale where operational costs are critical.

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Your Questions about the Gemini 1.0 Pro vs Gemini 2.5 Flash (Reasoning) Comparison

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Data source: https://artificialanalysis.ai/