Model Comparison

Gemini 1.5 Pro vs GPT-4oWhich is better in 2026?

Both models are evenly matched across the benchmarks. Gemini 1.5 Pro and GPT-4o cost the same.

Verdict: Gemini 1.5 Pro vs GPT-4o — which is better?

Gemini 1.5 Pro (by Google) and GPT-4o (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Gemini 1.5 Pro outperforms in 4 benchmarks (GPQA, MATH, MathVista, MMLU-Pro), while GPT-4o is better at 4 benchmarks (DROP, HumanEval, MGSM, MMLU). Both models are evenly matched across the benchmarks.

Gemini 1.5 Pro also accepts a larger context window (2,097,152 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 1.5 Pro if…

  • you process long inputs — it offers a 2,097,152 token context window

Choose GPT-4o if…

  • you want the most recent training data — it shipped May 2024
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Performance Benchmarks

Comparative analysis across standard metrics

8 benchmarks

Gemini 1.5 Pro outperforms in 4 benchmarks (GPQA, MATH, MathVista, MMLU-Pro), while GPT-4o is better at 4 benchmarks (DROP, HumanEval, MGSM, MMLU).

Both models are evenly matched across the benchmarks.

Wed Jun 24 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

For input processing, Gemini 1.5 Pro ($2.50/1M tokens) costs the same as GPT-4o ($2.50/1M tokens).

For output processing, Gemini 1.5 Pro ($10.00/1M tokens) costs the same as GPT-4o ($10.00/1M tokens).

In conclusion, Gemini 1.5 Pro and GPT-4o cost the same.*

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

Lowest available price from all providers
Wed Jun 24 2026 • llm-stats.com
Google
Gemini 1.5 Pro
Input tokens$2.50
Output tokens$10.00
Best providerGoogle
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 1.5 Pro accepts 2,097,152 input tokens compared to GPT-4o's 128,000 tokens. Gemini 1.5 Pro can generate longer responses up to 8,192 tokens, while GPT-4o is limited to 4,096 tokens.

Google
Gemini 1.5 Pro
Input2,097,152 tokens
Output8,192 tokens
OpenAI
GPT-4o
Input128,000 tokens
Output4,096 tokens
Wed Jun 24 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 1.5 Pro and GPT-4o support multimodal inputs.

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

Gemini 1.5 Pro

Text
Images
Audio
Video

GPT-4o

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 1.5 Pro

Proprietary

Closed source

GPT-4o

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Pro was released on 2024-05-01, while GPT-4o was released on 2024-05-13.

GPT-4o is 0 month newer than Gemini 1.5 Pro.

Gemini 1.5 Pro

May 1, 2024

2.1 years ago

GPT-4o

May 13, 2024

2.1 years ago

1w newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Pro has a documented knowledge cutoff of 2023-11-01, while GPT-4o's cutoff date is not specified.

We can confirm Gemini 1.5 Pro's training data extends to 2023-11-01, but cannot make a direct comparison without GPT-4o's cutoff date.

Gemini 1.5 Pro

Nov 2023

GPT-4o

—

Provider Availability

Gemini 1.5 Pro is available from Google. GPT-4o is available from Azure, OpenAI.

Gemini 1.5 Pro

google logo
Google
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

GPT-4o

azure logo
Azure
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (2,097,152 tokens)
Higher GPQA score (59.1% vs 53.6%)
Higher MATH score (86.5% vs 76.6%)
Higher MathVista score (68.1% vs 63.8%)
Higher MMLU-Pro score (75.8% vs 72.6%)
OpenAI
Higher DROP score (83.4% vs 74.9%)
Higher HumanEval score (90.2% vs 84.1%)
Higher MGSM score (90.5% vs 87.5%)
Higher MMLU score (88.7% vs 85.9%)
GoogleGemini 1.5 Pro
OpenAIGPT-4o
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 1.5 Pro
OpenAI
GPT-4o

FAQ

Common questions about Gemini 1.5 Pro vs GPT-4o.

Which is better, Gemini 1.5 Pro or GPT-4o?

Both models are evenly matched across the benchmarks. Gemini 1.5 Pro is made by Google and GPT-4o is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 1.5 Pro compare to GPT-4o in benchmarks?

Gemini 1.5 Pro scores XSTest: 98.8%, FLEURS: 93.3%, HellaSwag: 93.3%, GSM8k: 90.8%, BIG-Bench Hard: 89.2%. GPT-4o scores MGSM: 90.5%, HumanEval: 90.2%, MMLU: 88.7%, DROP: 83.4%, MATH: 76.6%.

Is Gemini 1.5 Pro cheaper than GPT-4o?

Both models cost $2.50 per million input tokens.

What are the context window sizes for Gemini 1.5 Pro and GPT-4o?

Gemini 1.5 Pro supports 2.1M tokens and GPT-4o supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 1.5 Pro and GPT-4o?

Key differences include context window (2.1M vs 128K). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 1.5 Pro and GPT-4o?

Gemini 1.5 Pro is developed by Google and GPT-4o is developed by OpenAI.

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