Model Comparison

Gemini 3 Flash vs GPT-4o

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is 3.9x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

8 benchmarks

Gemini 3 Flash outperforms in 8 benchmarks (CharXiv-R, GPQA, Humanity's Last Exam, MMMLU, MMMU-Pro, SimpleQA, SWE-Bench Verified, VideoMMMU), while GPT-4o is better at 0 benchmarks.

Gemini 3 Flash significantly outperforms across most benchmarks.

Thu Apr 16 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 5.0x cheaper than GPT-4o ($2.50/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 3.3x cheaper than GPT-4o ($10.00/1M tokens).

In conclusion, GPT-4o is more expensive than Gemini 3 Flash.*

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

Lowest available price from all providers
Thu Apr 16 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
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Context Window

Maximum input and output token capacity

Gemini 3 Flash accepts 1,000,000 input tokens compared to GPT-4o's 128,000 tokens. Gemini 3 Flash can generate longer responses up to 65,536 tokens, while GPT-4o is limited to 16,384 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
Thu Apr 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and GPT-4o support multimodal inputs.

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

Gemini 3 Flash

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 3 Flash

Proprietary

Closed source

GPT-4o

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while GPT-4o was released on 2024-08-06.

Gemini 3 Flash is 17 months newer than GPT-4o.

Gemini 3 Flash

Dec 17, 2025

4 months ago

1.4yr newer
GPT-4o

Aug 6, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while GPT-4o's cutoff date is not specified.

We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without GPT-4o's cutoff date.

Gemini 3 Flash

Jan 2025

GPT-4o

—

Provider Availability

Gemini 3 Flash is available from Google. GPT-4o is available from Azure, OpenAI.

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M

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 (1,000,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher CharXiv-R score (80.3% vs 58.8%)
Higher GPQA score (90.4% vs 70.1%)
Higher Humanity's Last Exam score (43.5% vs 5.3%)
Higher MMMLU score (91.8% vs 81.4%)
Higher MMMU-Pro score (81.2% vs 59.9%)
Higher SimpleQA score (68.7% vs 38.2%)
Higher SWE-Bench Verified score (78.0% vs 33.2%)
Higher VideoMMMU score (86.9% vs 61.2%)
OpenAI

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
OpenAI
GPT-4o

FAQ

Common questions about Gemini 3 Flash vs GPT-4o

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash 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.
Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%.
Gemini 3 Flash is 5.0x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. GPT-4o costs $2.50/M input and $10.00/M output via azure.
Gemini 3 Flash supports 1.0M tokens and GPT-4o supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (1.0M vs 128K), input pricing ($0.50 vs $2.50/M). See the full comparison above for benchmark-by-benchmark results.
Gemini 3 Flash is developed by Google and GPT-4o is developed by OpenAI.