Gemini 3 Flash vs GPT-5.4 mini Comparison

Comparing Gemini 3 Flash and GPT-5.4 mini across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

8 benchmarks

Gemini 3 Flash outperforms in 4 benchmarks (GPQA, Humanity's Last Exam, MMMU-Pro, Toolathlon), while GPT-5.4 mini is better at 4 benchmarks (MCP Atlas, MRCR v2 (8-needle), OmniDocBench 1.5, Terminal-Bench 2.0).

Both models are evenly matched across the benchmarks.

Wed Mar 18 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 1.5x cheaper than GPT-5.4 mini ($0.75/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 1.5x cheaper than GPT-5.4 mini ($4.50/1M tokens).

In conclusion, GPT-5.4 mini is more expensive than Gemini 3 Flash.*

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

Lowest available price from all providers
Wed Mar 18 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
OpenAI
GPT-5.4 mini
Input tokens$0.75
Output tokens$4.50
Best providerOpenAI
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Context Window

Maximum input and output token capacity

Gemini 3 Flash accepts 1,000,000 input tokens compared to GPT-5.4 mini's 400,000 tokens. GPT-5.4 mini can generate longer responses up to 128,000 tokens, while Gemini 3 Flash is limited to 65,536 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
OpenAI
GPT-5.4 mini
Input400,000 tokens
Output128,000 tokens
Wed Mar 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and GPT-5.4 mini 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-5.4 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 3 Flash

Proprietary

Closed source

GPT-5.4 mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while GPT-5.4 mini was released on 2026-03-17.

GPT-5.4 mini is 3 months newer than Gemini 3 Flash.

Gemini 3 Flash

Dec 17, 2025

3 months ago

GPT-5.4 mini

Mar 17, 2026

1 days ago

3mo newer

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a knowledge cutoff of 2025-01-31, while GPT-5.4 mini has a cutoff of 2025-08-31.

GPT-5.4 mini has more recent training data (up to 2025-08-31), making it potentially better informed about events through that date compared to Gemini 3 Flash (2025-01-31).

Gemini 3 Flash

Jan 2025

GPT-5.4 mini

Aug 2025

7 mo newer

Provider Availability

Gemini 3 Flash is available from Google. GPT-5.4 mini is available from OpenAI. The availability of providers can affect quality of the model and reliability.

Gemini 3 Flash

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

GPT-5.4 mini

openai logo
OpenAI
Input Price:Input: $0.75/1MOutput Price:Output: $4.50/1M
* 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 GPQA score (90.4% vs 88.0%)
Higher Humanity's Last Exam score (43.5% vs 28.2%)
Higher MMMU-Pro score (81.2% vs 76.6%)
Higher Toolathlon score (49.4% vs 42.9%)
OpenAI
Higher MCP Atlas score (57.7% vs 57.4%)
Higher MRCR v2 (8-needle) score (33.6% vs 22.1%)
Higher OmniDocBench 1.5 score (87.4% vs 12.1%)
Higher Terminal-Bench 2.0 score (60.0% vs 47.6%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
OpenAI
GPT-5.4 mini