Model Comparison

Gemini 3 Flash vs GPT-5 Medium

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is 3.1x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Gemini 3 Flash outperforms in 2 benchmarks (AIME 2025, GPQA), while GPT-5 Medium is better at 0 benchmarks.

Gemini 3 Flash significantly outperforms across most benchmarks.

Mon Jun 01 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 2.5x cheaper than GPT-5 Medium ($1.25/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 3.3x cheaper than GPT-5 Medium ($10.00/1M tokens).

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

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

Lowest available price from all providers
Mon Jun 01 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
OpenAI
GPT-5 Medium
Input tokens$1.25
Output tokens$10.00
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 Medium's 400,000 tokens. GPT-5 Medium 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 Medium
Input400,000 tokens
Output128,000 tokens
Mon Jun 01 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and GPT-5 Medium 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 Medium

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 Medium

Proprietary

Closed source

Release Timeline

When each model was launched

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

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

Gemini 3 Flash

Dec 17, 2025

5 months ago

4mo newer
GPT-5 Medium

Aug 7, 2025

9 months ago

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a knowledge cutoff of 2025-01-31, while GPT-5 Medium has a cutoff of 2024-09-30.

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 Medium (2024-09-30).

Gemini 3 Flash

Jan 2025

4 mo newer
GPT-5 Medium

Sep 2024

Provider Availability

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

Gemini 3 Flash

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

GPT-5 Medium

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput 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 AIME 2025 score (99.7% vs 88.9%)
Higher GPQA score (90.4% vs 88.1%)
OpenAI

No standout differentiators in the data we have for this pair.

Detailed Comparison

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

FAQ

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

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

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is made by Google and GPT-5 Medium 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 Medium 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 Medium scores AIME 2025: 88.9%, GPQA: 88.1%.

Is Gemini 3 Flash cheaper than GPT-5 Medium?

Gemini 3 Flash is 2.5x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. GPT-5 Medium costs $1.25/M input and $10.00/M output via openai.

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

Gemini 3 Flash supports 1.0M tokens and GPT-5 Medium 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 Medium?

Key differences include context window (1.0M vs 400K), input pricing ($0.50 vs $1.25/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Flash and GPT-5 Medium?

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