Model Comparison

Gemini 2.5 Flash vs GPT-4.1 nano

Gemini 2.5 Flash significantly outperforms across most benchmarks. GPT-4.1 nano is 4.9x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Gemini 2.5 Flash outperforms in 5 benchmarks (Aider-Polyglot, Aider-Polyglot Edit, AIME 2024, GPQA, MMMU), while GPT-4.1 nano is better at 0 benchmarks.

Gemini 2.5 Flash significantly outperforms across most benchmarks.

Tue Apr 21 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4.1 nano costs less

For input processing, Gemini 2.5 Flash ($0.30/1M tokens) is 3.0x more expensive than GPT-4.1 nano ($0.10/1M tokens).

For output processing, Gemini 2.5 Flash ($2.50/1M tokens) is 6.3x more expensive than GPT-4.1 nano ($0.40/1M tokens).

In conclusion, Gemini 2.5 Flash is more expensive than GPT-4.1 nano.*

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

Lowest available price from all providers
Tue Apr 21 2026 • llm-stats.com
Google
Gemini 2.5 Flash
Input tokens$0.30
Output tokens$2.50
Best providerGoogle
OpenAI
GPT-4.1 nano
Input tokens$0.10
Output tokens$0.40
Best providerOpenAI
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Context Window

Maximum input and output token capacity

Gemini 2.5 Flash accepts 1,048,576 input tokens compared to GPT-4.1 nano's 1,047,576 tokens. Gemini 2.5 Flash can generate longer responses up to 65,536 tokens, while GPT-4.1 nano is limited to 32,768 tokens.

Google
Gemini 2.5 Flash
Input1,048,576 tokens
Output65,536 tokens
OpenAI
GPT-4.1 nano
Input1,047,576 tokens
Output32,768 tokens
Tue Apr 21 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 2.5 Flash and GPT-4.1 nano support multimodal inputs.

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

Gemini 2.5 Flash

Text
Images
Audio
Video

GPT-4.1 nano

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 2.5 Flash

Proprietary

Closed source

GPT-4.1 nano

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.5 Flash was released on 2025-05-20, while GPT-4.1 nano was released on 2025-04-14.

Gemini 2.5 Flash is 1 month newer than GPT-4.1 nano.

Gemini 2.5 Flash

May 20, 2025

11 months ago

1mo newer
GPT-4.1 nano

Apr 14, 2025

1.0 years ago

Knowledge Cutoff

When training data ends

Gemini 2.5 Flash has a knowledge cutoff of 2025-01-31, while GPT-4.1 nano has a cutoff of 2024-05-31.

Gemini 2.5 Flash has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to GPT-4.1 nano (2024-05-31).

Gemini 2.5 Flash

Jan 2025

8 mo newer
GPT-4.1 nano

May 2024

Provider Availability

Gemini 2.5 Flash is available from Google. GPT-4.1 nano is available from OpenAI.

Gemini 2.5 Flash

google logo
Google
Input Price:Input: $0.30/1MOutput Price:Output: $2.50/1M

GPT-4.1 nano

openai logo
OpenAI
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,048,576 tokens)
Higher Aider-Polyglot score (61.9% vs 9.8%)
Higher Aider-Polyglot Edit score (56.7% vs 6.2%)
Higher AIME 2024 score (88.0% vs 29.4%)
Higher GPQA score (82.8% vs 50.3%)
Higher MMMU score (79.7% vs 55.4%)
OpenAI
Less expensive input tokens
Less expensive output tokens
GoogleGemini 2.5 Flash
OpenAIGPT-4.1 nano
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 2.5 Flash
OpenAI
GPT-4.1 nano

FAQ

Common questions about Gemini 2.5 Flash vs GPT-4.1 nano

Gemini 2.5 Flash significantly outperforms across most benchmarks. Gemini 2.5 Flash is made by Google and GPT-4.1 nano is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Gemini 2.5 Flash scores Global-MMLU-Lite: 88.4%, AIME 2024: 88.0%, FACTS Grounding: 85.3%, GPQA: 82.8%, MMMU: 79.7%. GPT-4.1 nano scores MMLU: 80.1%, IFEval: 74.5%, CharXiv-D: 73.9%, MMMLU: 66.9%, Multi-IF: 57.2%.
GPT-4.1 nano is 3.0x cheaper for input tokens. Gemini 2.5 Flash costs $0.30/M input and $2.50/M output via google. GPT-4.1 nano costs $0.10/M input and $0.40/M output via openai.
Gemini 2.5 Flash supports 1.0M tokens and GPT-4.1 nano supports 1.0M 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 1.0M), input pricing ($0.30 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.
Gemini 2.5 Flash is developed by Google and GPT-4.1 nano is developed by OpenAI.