GPT-4 Turbo vs Gemini 1.5 Flash Comparison

Comparing GPT-4 Turbo and Gemini 1.5 Flash across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

GPT-4 Turbo outperforms in 3 benchmarks (HumanEval, MGSM, MMLU), while Gemini 1.5 Flash is better at 2 benchmarks (GPQA, MATH).

GPT-4 Turbo has a slight edge in benchmark performance.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 1.5 Flash costs less

For input processing, GPT-4 Turbo ($10.00/1M tokens) is 66.7x more expensive than Gemini 1.5 Flash ($0.15/1M tokens).

For output processing, GPT-4 Turbo ($30.00/1M tokens) is 50.0x more expensive than Gemini 1.5 Flash ($0.60/1M tokens).

In conclusion, GPT-4 Turbo is more expensive than Gemini 1.5 Flash.*

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

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

GPT-4 Turbo

Input tokens$10.00

Output tokens$30.00

Best providerAzure

Gemini 1.5 Flash

Input tokens$0.15

Output tokens$0.60

Best providerGoogle

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Context Window

Maximum input and output token capacity

Gemini 1.5 Flash accepts 1,048,576 input tokens compared to GPT-4 Turbo's 128,000 tokens. Gemini 1.5 Flash can generate longer responses up to 8,192 tokens, while GPT-4 Turbo is limited to 4,096 tokens.

GPT-4 Turbo

Input128,000 tokens

Output4,096 tokens

Gemini 1.5 Flash

Input1,048,576 tokens

Output8,192 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Flash supports multimodal inputs, whereas GPT-4 Turbo does not.

Gemini 1.5 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-4 Turbo

Text

Images

Audio

Video

Gemini 1.5 Flash

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.

GPT-4 Turbo

Proprietary

Closed source

Gemini 1.5 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4 Turbo was released on 2024-04-09, while Gemini 1.5 Flash was released on 2024-05-01.

Gemini 1.5 Flash is 1 month newer than GPT-4 Turbo.

GPT-4 Turbo

Apr 9, 2024

1.9 years ago

Gemini 1.5 Flash

May 1, 2024

1.9 years ago

3w newer

Knowledge Cutoff

When training data ends

GPT-4 Turbo has a knowledge cutoff of 2023-12-31, while Gemini 1.5 Flash has a cutoff of 2023-11-01.

GPT-4 Turbo has more recent training data (up to 2023-12-31), making it potentially better informed about events through that date compared to Gemini 1.5 Flash (2023-11-01).

GPT-4 Turbo

Dec 2023

1 mo newer

Gemini 1.5 Flash

Nov 2023

Provider Availability

GPT-4 Turbo is available from Azure, OpenAI. Gemini 1.5 Flash is available from Google. The availability of providers can affect quality of the model and reliability.