Gemini 2.0 Flash vs Gemini 1.5 Pro Comparison

Comparing Gemini 2.0 Flash and Gemini 1.5 Pro across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

8 benchmarks

Gemini 2.0 Flash outperforms in 7 benchmarks (GPQA, HiddenMath, MATH, MMLU-Pro, MMMU, Natural2Code, Vibe-Eval), while Gemini 1.5 Pro is better at 1 benchmark (MRCR).

Gemini 2.0 Flash significantly outperforms across most benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 2.0 Flash costs less

For input processing, Gemini 2.0 Flash ($0.10/1M tokens) is 25.0x cheaper than Gemini 1.5 Pro ($2.50/1M tokens).

For output processing, Gemini 2.0 Flash ($0.40/1M tokens) is 25.0x cheaper than Gemini 1.5 Pro ($10.00/1M tokens).

In conclusion, Gemini 1.5 Pro is more expensive than Gemini 2.0 Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

Gemini 2.0 Flash

Input tokens$0.10

Output tokens$0.40

Best providerGoogle

Gemini 1.5 Pro

Input tokens$2.50

Output tokens$10.00

Best providerGoogle

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Context Window

Maximum input and output token capacity

Gemini 1.5 Pro accepts 2,097,152 input tokens compared to Gemini 2.0 Flash's 1,048,576 tokens. Both models can generate responses up to 8,192 tokens.

Gemini 2.0 Flash

Input1,048,576 tokens

Output8,192 tokens

Gemini 1.5 Pro

Input2,097,152 tokens

Output8,192 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 2.0 Flash and Gemini 1.5 Pro support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 2.0 Flash

Text

Images

Audio

Video

Gemini 1.5 Pro

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 2.0 Flash

Proprietary

Closed source

Gemini 1.5 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.0 Flash was released on 2024-12-01, while Gemini 1.5 Pro was released on 2024-05-01.

Gemini 2.0 Flash is 7 months newer than Gemini 1.5 Pro.

Gemini 2.0 Flash

Dec 1, 2024

1.3 years ago

7mo newer

Gemini 1.5 Pro

May 1, 2024

1.9 years ago

Knowledge Cutoff

When training data ends

Gemini 2.0 Flash has a knowledge cutoff of 2024-08-01, while Gemini 1.5 Pro has a cutoff of 2023-11-01.

Gemini 2.0 Flash has more recent training data (up to 2024-08-01), making it potentially better informed about events through that date compared to Gemini 1.5 Pro (2023-11-01).

Gemini 2.0 Flash

Aug 2024

9 mo newer

Gemini 1.5 Pro

Nov 2023

Provider Availability

Gemini 2.0 Flash is available from Google. Gemini 1.5 Pro is available from Google. The availability of providers can affect quality of the model and reliability.