Model Comparison

Gemini 1.5 Flash vs GPT-4.1Which is better in 2026?

GPT-4.1 significantly outperforms across most benchmarks. Gemini 1.5 Flash is 13.3x cheaper per token.

Verdict: Gemini 1.5 Flash vs GPT-4.1 — which is better?

Gemini 1.5 Flash (by Google) and GPT-4.1 (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 1.5 Flash outperforms in 0 benchmarks, while GPT-4.1 is better at 4 benchmarks (GPQA, MathVista, MMLU, MMMU). GPT-4.1 significantly outperforms across most benchmarks.

On price, Gemini 1.5 Flash is roughly 13.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 1.5 Flash also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 1.5 Flash if…

  • cost matters — it's about 13.3x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window

Choose GPT-4.1 if…

  • you want the strongest raw capability — it leads on 4 of 4 shared benchmarks
  • you want the most recent training data — it shipped Apr 2025
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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemini 1.5 Flash outperforms in 0 benchmarks, while GPT-4.1 is better at 4 benchmarks (GPQA, MathVista, MMLU, MMMU).

GPT-4.1 significantly outperforms across most benchmarks.

Sat Jun 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 1.5 Flash costs less

For input processing, Gemini 1.5 Flash ($0.15/1M tokens) is 13.3x cheaper than GPT-4.1 ($2.00/1M tokens).

For output processing, Gemini 1.5 Flash ($0.60/1M tokens) is 13.3x cheaper than GPT-4.1 ($8.00/1M tokens).

In conclusion, GPT-4.1 is more expensive than Gemini 1.5 Flash.*

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

Lowest available price from all providers
Sat Jun 13 2026 • llm-stats.com
Google
Gemini 1.5 Flash
Input tokens$0.15
Output tokens$0.60
Best providerGoogle
OpenAI
GPT-4.1
Input tokens$2.00
Output tokens$8.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 1.5 Flash accepts 1,048,576 input tokens compared to GPT-4.1's 1,047,576 tokens. GPT-4.1 can generate longer responses up to 32,768 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-4.1
Input1,047,576 tokens
Output32,768 tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 1.5 Flash and GPT-4.1 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-4.1

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-4.1

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Flash was released on 2024-05-01, while GPT-4.1 was released on 2025-04-14.

GPT-4.1 is 12 months newer than Gemini 1.5 Flash.

Gemini 1.5 Flash

May 1, 2024

2.1 years ago

GPT-4.1

Apr 14, 2025

1.2 years ago

11mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash has a knowledge cutoff of 2023-11-01, while GPT-4.1 has a cutoff of 2024-06-01.

GPT-4.1 has more recent training data (up to 2024-06-01), making it potentially better informed about events through that date compared to Gemini 1.5 Flash (2023-11-01).

Gemini 1.5 Flash

Nov 2023

GPT-4.1

Jun 2024

7 mo newer

Provider Availability

Gemini 1.5 Flash is available from Google. GPT-4.1 is available from OpenAI.

Gemini 1.5 Flash

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

GPT-4.1

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $8.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
OpenAI
Higher GPQA score (66.3% vs 51.0%)
Higher MathVista score (72.2% vs 65.8%)
Higher MMLU score (90.2% vs 78.9%)
Higher MMMU score (74.8% vs 62.3%)
GoogleGemini 1.5 Flash
OpenAIGPT-4.1
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 1.5 Flash
OpenAI
GPT-4.1

FAQ

Common questions about Gemini 1.5 Flash vs GPT-4.1.

Which is better, Gemini 1.5 Flash or GPT-4.1?

GPT-4.1 significantly outperforms across most benchmarks. Gemini 1.5 Flash is made by Google and GPT-4.1 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 1.5 Flash compare to GPT-4.1 in benchmarks?

Gemini 1.5 Flash scores XSTest: 97.0%, FLEURS: 90.4%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%. GPT-4.1 scores MMLU: 90.2%, CharXiv-D: 87.9%, IFEval: 87.4%, MMMLU: 87.3%, MMMU: 74.8%.

Is Gemini 1.5 Flash cheaper than GPT-4.1?

Gemini 1.5 Flash is 13.3x cheaper for input tokens. Gemini 1.5 Flash costs $0.15/M input and $0.60/M output via google. GPT-4.1 costs $2.00/M input and $8.00/M output via openai.

What are the context window sizes for Gemini 1.5 Flash and GPT-4.1?

Gemini 1.5 Flash supports 1.0M tokens and GPT-4.1 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 1.5 Flash and GPT-4.1?

Key differences include context window (1.0M vs 1.0M), input pricing ($0.15 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 1.5 Flash and GPT-4.1?

Gemini 1.5 Flash is developed by Google and GPT-4.1 is developed by OpenAI.

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