Model Comparison

Gemini 1.5 Flash vs GPT-4o mini

Gemini 1.5 Flash has a slight edge in benchmark performance. Gemini 1.5 Flash and GPT-4o mini cost the same.

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Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

Gemini 1.5 Flash outperforms in 4 benchmarks (GPQA, MATH, MathVista, MMMU), while GPT-4o mini is better at 3 benchmarks (HumanEval, MGSM, MMLU).

Gemini 1.5 Flash has a slight edge in benchmark performance.

Mon Apr 20 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4o mini costs less

For input processing, Gemini 1.5 Flash ($0.15/1M tokens) costs the same as GPT-4o mini ($0.15/1M tokens).

For output processing, Gemini 1.5 Flash ($0.60/1M tokens) costs the same as GPT-4o mini ($0.60/1M tokens).

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

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

Lowest available price from all providers
Mon Apr 20 2026 • llm-stats.com
Google
Gemini 1.5 Flash
Input tokens$0.15
Output tokens$0.60
Best providerGoogle
OpenAI
GPT-4o mini
Input tokens$0.15
Output tokens$0.60
Best providerAzure
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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-4o mini's 128,000 tokens. GPT-4o mini can generate longer responses up to 16,384 tokens, while Gemini 1.5 Flash is limited to 8,192 tokens.

Google
Gemini 1.5 Flash
Input1,048,576 tokens
Output8,192 tokens
OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
Mon Apr 20 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

Gemini 1.5 Flash

Text
Images
Audio
Video

GPT-4o mini

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 Flash

Proprietary

Closed source

GPT-4o mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Flash was released on 2024-05-01, while GPT-4o mini was released on 2024-07-18.

GPT-4o mini is 3 months newer than Gemini 1.5 Flash.

Gemini 1.5 Flash

May 1, 2024

2.0 years ago

GPT-4o mini

Jul 18, 2024

1.8 years ago

2mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash has a knowledge cutoff of 2023-11-01, while GPT-4o mini has a cutoff of 2023-10-01.

Gemini 1.5 Flash has more recent training data (up to 2023-11-01), making it potentially better informed about events through that date compared to GPT-4o mini (2023-10-01).

Gemini 1.5 Flash

Nov 2023

1 mo newer
GPT-4o mini

Oct 2023

Provider Availability

Gemini 1.5 Flash is available from Google. GPT-4o mini is available from Azure.

Gemini 1.5 Flash

google logo
Google
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M

GPT-4o mini

azure logo
Azure
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,048,576 tokens)
Higher GPQA score (51.0% vs 40.2%)
Higher MATH score (77.9% vs 70.2%)
Higher MathVista score (65.8% vs 56.7%)
Higher MMMU score (62.3% vs 59.4%)
OpenAI
Higher HumanEval score (87.2% vs 74.3%)
Higher MGSM score (87.0% vs 82.6%)
Higher MMLU score (82.0% vs 78.9%)
GoogleGemini 1.5 Flash
OpenAIGPT-4o mini
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Detailed Comparison

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

FAQ

Common questions about Gemini 1.5 Flash vs GPT-4o mini

Gemini 1.5 Flash has a slight edge in benchmark performance. Gemini 1.5 Flash is made by Google and GPT-4o mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Gemini 1.5 Flash scores XSTest: 97.0%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%, MGSM: 82.6%. GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%.
Both models cost $0.15 per million input tokens.
Gemini 1.5 Flash supports 1.0M tokens and GPT-4o mini 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). See the full comparison above for benchmark-by-benchmark results.
Gemini 1.5 Flash is developed by Google and GPT-4o mini is developed by OpenAI.