Model Comparison

Gemini 3 Flash vs GPT-5 miniWhich is better in 2026?

Gemini 3 Flash significantly outperforms across most benchmarks. GPT-5 mini is 1.6x cheaper per token.

Verdict: Gemini 3 Flash vs GPT-5 mini — which is better?

Gemini 3 Flash (by Google) and GPT-5 mini (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 3 Flash outperforms in 3 benchmarks (AIME 2025, GPQA, Humanity's Last Exam), while GPT-5 mini is better at 0 benchmarks. Gemini 3 Flash significantly outperforms across most benchmarks.

On price, GPT-5 mini is roughly 1.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3 Flash also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3 Flash if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Dec 2025

Choose GPT-5 mini if…

  • cost matters — it's about 1.6x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini 3 Flash outperforms in 3 benchmarks (AIME 2025, GPQA, Humanity's Last Exam), while GPT-5 mini is better at 0 benchmarks.

Gemini 3 Flash significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-5 mini costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 2.0x more expensive than GPT-5 mini ($0.25/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 1.5x more expensive than GPT-5 mini ($2.00/1M tokens).

In conclusion, Gemini 3 Flash is more expensive than GPT-5 mini.*

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

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
OpenAI
GPT-5 mini
Input tokens$0.25
Output tokens$2.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3 Flash accepts 1,000,000 input tokens compared to GPT-5 mini's 400,000 tokens. GPT-5 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 mini
Input400,000 tokens
Output128,000 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and GPT-5 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 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 mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while GPT-5 mini was released on 2025-08-07.

Gemini 3 Flash is 4 months newer than GPT-5 mini.

Gemini 3 Flash

Dec 17, 2025

5 months ago

4mo newer
GPT-5 mini

Aug 7, 2025

10 months ago

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a knowledge cutoff of 2025-01-31, while GPT-5 mini has a cutoff of 2024-05-30.

Gemini 3 Flash has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to GPT-5 mini (2024-05-30).

Gemini 3 Flash

Jan 2025

8 mo newer
GPT-5 mini

May 2024

Provider Availability

Gemini 3 Flash is available from Google. GPT-5 mini is available from OpenAI.

Gemini 3 Flash

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

GPT-5 mini

openai logo
OpenAI
Input Price:Input: $0.25/1MOutput Price:Output: $2.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,000,000 tokens)
Higher AIME 2025 score (99.7% vs 91.1%)
Higher GPQA score (90.4% vs 82.3%)
Higher Humanity's Last Exam score (43.5% vs 16.7%)
OpenAI
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
OpenAI
GPT-5 mini

FAQ

Common questions about Gemini 3 Flash vs GPT-5 mini.

Which is better, Gemini 3 Flash or GPT-5 mini?

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is made by Google and GPT-5 mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3 Flash compare to GPT-5 mini in benchmarks?

Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. GPT-5 mini scores AIME 2025: 91.1%, HMMT 2025: 87.8%, GPQA: 82.3%, FrontierMath: 22.1%, Humanity's Last Exam: 16.7%.

Is Gemini 3 Flash cheaper than GPT-5 mini?

GPT-5 mini is 2.0x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. GPT-5 mini costs $0.25/M input and $2.00/M output via openai.

What are the context window sizes for Gemini 3 Flash and GPT-5 mini?

Gemini 3 Flash supports 1.0M tokens and GPT-5 mini supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3 Flash and GPT-5 mini?

Key differences include context window (1.0M vs 400K), input pricing ($0.50 vs $0.25/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Flash and GPT-5 mini?

Gemini 3 Flash is developed by Google and GPT-5 mini is developed by OpenAI.

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