Gemini 3.1 Flash-Lite vs o4-mini Comparison

Comparing Gemini 3.1 Flash-Lite and o4-mini across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini 3.1 Flash-Lite outperforms in 3 benchmarks (CharXiv-R, GPQA, Humanity's Last Exam), while o4-mini is better at 0 benchmarks.

Gemini 3.1 Flash-Lite significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3.1 Flash-Lite costs less

For input processing, Gemini 3.1 Flash-Lite ($0.25/1M tokens) is 4.4x cheaper than o4-mini ($1.10/1M tokens).

For output processing, Gemini 3.1 Flash-Lite ($1.50/1M tokens) is 2.9x cheaper than o4-mini ($4.40/1M tokens).

In conclusion, o4-mini is more expensive than Gemini 3.1 Flash-Lite.*

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

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Gemini 3.1 Flash-Lite

Input tokens$0.25

Output tokens$1.50

Best providerGoogle

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 3.1 Flash-Lite accepts 1,000,000 input tokens compared to o4-mini's 200,000 tokens. o4-mini can generate longer responses up to 100,000 tokens, while Gemini 3.1 Flash-Lite is limited to 65,536 tokens.

Gemini 3.1 Flash-Lite

Input1,000,000 tokens

Output65,536 tokens

o4-mini

Input200,000 tokens

Output100,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3.1 Flash-Lite and o4-mini support multimodal inputs.

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

Gemini 3.1 Flash-Lite

Text

Images

Audio

Video

o4-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 3.1 Flash-Lite

Proprietary

Closed source

o4-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.1 Flash-Lite was released on 2026-03-03, while o4-mini was released on 2025-04-16.

Gemini 3.1 Flash-Lite is 11 months newer than o4-mini.

Gemini 3.1 Flash-Lite

Mar 3, 2026

1 weeks ago

10mo newer

o4-mini

Apr 16, 2025

11 months ago

Knowledge Cutoff

When training data ends

Gemini 3.1 Flash-Lite has a knowledge cutoff of 2025-01-31, while o4-mini has a cutoff of 2024-05-31.

Gemini 3.1 Flash-Lite has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to o4-mini (2024-05-31).

Gemini 3.1 Flash-Lite

Jan 2025

8 mo newer

o4-mini

May 2024

Provider Availability

Gemini 3.1 Flash-Lite is available from Google. o4-mini is available from OpenAI. The availability of providers can affect quality of the model and reliability.