Model Comparison

Gemini 2.5 Flash-Lite vs o4-mini

o4-mini significantly outperforms across most benchmarks. Gemini 2.5 Flash-Lite is 11.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Gemini 2.5 Flash-Lite outperforms in 0 benchmarks, while o4-mini is better at 6 benchmarks (Aider-Polyglot, AIME 2025, GPQA, Humanity's Last Exam, MMMU, SWE-Bench Verified).

o4-mini significantly outperforms across most benchmarks.

Wed Apr 29 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 2.5 Flash-Lite costs less

For input processing, Gemini 2.5 Flash-Lite ($0.10/1M tokens) is 11.0x cheaper than o4-mini ($1.10/1M tokens).

For output processing, Gemini 2.5 Flash-Lite ($0.40/1M tokens) is 11.0x cheaper than o4-mini ($4.40/1M tokens).

In conclusion, o4-mini is more expensive than Gemini 2.5 Flash-Lite.*

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

Lowest available price from all providers
Wed Apr 29 2026 • llm-stats.com
Google
Gemini 2.5 Flash-Lite
Input tokens$0.10
Output tokens$0.40
Best providerGoogle
OpenAI
o4-mini
Input tokens$1.10
Output tokens$4.40
Best providerOpenAI
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Context Window

Maximum input and output token capacity

Gemini 2.5 Flash-Lite accepts 1,048,576 input tokens compared to o4-mini's 200,000 tokens. o4-mini can generate longer responses up to 100,000 tokens, while Gemini 2.5 Flash-Lite is limited to 65,536 tokens.

Google
Gemini 2.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
OpenAI
o4-mini
Input200,000 tokens
Output100,000 tokens
Wed Apr 29 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 2.5 Flash-Lite and o4-mini support multimodal inputs.

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

Gemini 2.5 Flash-Lite

Text
Images
Audio
Video

o4-mini

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 2.5 Flash-Lite is licensed under Creative Commons Attribution 4.0 License, while o4-mini uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini 2.5 Flash-Lite

Creative Commons Attribution 4.0 License

Open weights

o4-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.5 Flash-Lite was released on 2025-06-17, while o4-mini was released on 2025-04-16.

Gemini 2.5 Flash-Lite is 2 months newer than o4-mini.

Gemini 2.5 Flash-Lite

Jun 17, 2025

10 months ago

2mo newer
o4-mini

Apr 16, 2025

1.0 years ago

Knowledge Cutoff

When training data ends

Gemini 2.5 Flash-Lite has a knowledge cutoff of 2025-01-01, while o4-mini has a cutoff of 2024-05-31.

Gemini 2.5 Flash-Lite has more recent training data (up to 2025-01-01), making it potentially better informed about events through that date compared to o4-mini (2024-05-31).

Gemini 2.5 Flash-Lite

Jan 2025

8 mo newer
o4-mini

May 2024

Provider Availability

Gemini 2.5 Flash-Lite is available from Google. o4-mini is available from OpenAI.

Gemini 2.5 Flash-Lite

google logo
Google
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M

o4-mini

openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
* 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
Has open weights
OpenAI
Higher Aider-Polyglot score (68.9% vs 26.7%)
Higher AIME 2025 score (92.7% vs 49.8%)
Higher GPQA score (81.4% vs 64.6%)
Higher Humanity's Last Exam score (14.7% vs 5.1%)
Higher MMMU score (81.6% vs 72.9%)
Higher SWE-Bench Verified score (68.1% vs 31.6%)
GoogleGemini 2.5 Flash-Lite
OpenAIo4-mini
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 2.5 Flash-Lite
OpenAI
o4-mini

FAQ

Common questions about Gemini 2.5 Flash-Lite vs o4-mini

o4-mini significantly outperforms across most benchmarks. Gemini 2.5 Flash-Lite is made by Google and o4-mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Gemini 2.5 Flash-Lite scores FACTS Grounding: 84.1%, Global-MMLU-Lite: 81.1%, MMMU: 72.9%, GPQA: 64.6%, Vibe-Eval: 51.3%. o4-mini scores AIME 2024: 93.4%, AIME 2025: 92.7%, MathVista: 84.3%, MMMU: 81.6%, GPQA: 81.4%.
Gemini 2.5 Flash-Lite is 11.0x cheaper for input tokens. Gemini 2.5 Flash-Lite costs $0.10/M input and $0.40/M output via google. o4-mini costs $1.10/M input and $4.40/M output via openai.
Gemini 2.5 Flash-Lite supports 1.0M tokens and o4-mini supports 200K 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 200K), input pricing ($0.10 vs $1.10/M), licensing (Creative Commons Attribution 4.0 License vs Proprietary). See the full comparison above for benchmark-by-benchmark results.
Gemini 2.5 Flash-Lite is developed by Google and o4-mini is developed by OpenAI.