GPT-4o vs Gemini 1.5 Flash 8B Comparison

Comparing GPT-4o and Gemini 1.5 Flash 8B across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

GPT-4o outperforms in 4 benchmarks (GPQA, MathVista, MMLU-Pro, MMMU), while Gemini 1.5 Flash 8B is better at 0 benchmarks.

GPT-4o significantly outperforms across most benchmarks.

Wed Mar 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 1.5 Flash 8B costs less

For input processing, GPT-4o ($2.50/1M tokens) is 35.7x more expensive than Gemini 1.5 Flash 8B ($0.07/1M tokens).

For output processing, GPT-4o ($10.00/1M tokens) is 33.3x more expensive than Gemini 1.5 Flash 8B ($0.30/1M tokens).

In conclusion, GPT-4o is more expensive than Gemini 1.5 Flash 8B.*

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

Lowest available price from all providers

Wed Mar 18 2026 • llm-stats.com

GPT-4o

Input tokens$2.50

Output tokens$10.00

Best providerAzure

Gemini 1.5 Flash 8B

Input tokens$0.07

Output tokens$0.30

Best providerGoogle

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Context Window

Maximum input and output token capacity

Gemini 1.5 Flash 8B accepts 1,048,576 input tokens compared to GPT-4o's 128,000 tokens. GPT-4o can generate longer responses up to 16,384 tokens, while Gemini 1.5 Flash 8B is limited to 8,192 tokens.

GPT-4o

Input128,000 tokens

Output16,384 tokens

Gemini 1.5 Flash 8B

Input1,048,576 tokens

Output8,192 tokens

Wed Mar 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-4o and Gemini 1.5 Flash 8B support multimodal inputs.

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

GPT-4o

Text

Images

Audio

Video

Gemini 1.5 Flash 8B

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-4o

Proprietary

Closed source

Gemini 1.5 Flash 8B

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while Gemini 1.5 Flash 8B was released on 2024-03-15.

GPT-4o is 5 months newer than Gemini 1.5 Flash 8B.

GPT-4o

Aug 6, 2024

1.6 years ago

4mo newer

Gemini 1.5 Flash 8B

Mar 15, 2024

2.0 years ago

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash 8B has a documented knowledge cutoff of 2024-10-01, while GPT-4o's cutoff date is not specified.

We can confirm Gemini 1.5 Flash 8B's training data extends to 2024-10-01, but cannot make a direct comparison without GPT-4o's cutoff date.

GPT-4o

—

Gemini 1.5 Flash 8B

Oct 2024

Provider Availability

GPT-4o is available from Azure, OpenAI. Gemini 1.5 Flash 8B is available from Google. The availability of providers can affect quality of the model and reliability.