Gemini 3.1 Pro vs LongCat-Flash-Chat Comparison

Comparing Gemini 3.1 Pro and LongCat-Flash-Chat across benchmarks, pricing, and capabilities.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Gemini 3.1 Pro outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while LongCat-Flash-Chat is better at 0 benchmarks.

Gemini 3.1 Pro significantly outperforms across most benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

LongCat-Flash-Chat costs less

For input processing, Gemini 3.1 Pro ($2.50/1M tokens) is 8.3x more expensive than LongCat-Flash-Chat ($0.30/1M tokens).

For output processing, Gemini 3.1 Pro ($15.00/1M tokens) is 12.5x more expensive than LongCat-Flash-Chat ($1.20/1M tokens).

In conclusion, Gemini 3.1 Pro is more expensive than LongCat-Flash-Chat.*

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

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

Gemini 3.1 Pro

Input tokens$2.50

Output tokens$15.00

Best providerGoogle

LongCat-Flash-Chat

Input tokens$0.30

Output tokens$1.20

Best providerMeituan

Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3.1 Pro accepts 1,048,576 input tokens compared to LongCat-Flash-Chat's 128,000 tokens. LongCat-Flash-Chat can generate longer responses up to 128,000 tokens, while Gemini 3.1 Pro is limited to 65,536 tokens.

Gemini 3.1 Pro

Input1,048,576 tokens

Output65,536 tokens

LongCat-Flash-Chat

Input128,000 tokens

Output128,000 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 3.1 Pro supports multimodal inputs, whereas LongCat-Flash-Chat does not.

Gemini 3.1 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 3.1 Pro

Text

Images

Audio

Video

LongCat-Flash-Chat

Text

Images

Audio

Video

License

Usage and distribution terms

Gemini 3.1 Pro is licensed under a proprietary license, while LongCat-Flash-Chat uses MIT.

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

Gemini 3.1 Pro

Proprietary

Closed source

LongCat-Flash-Chat

MIT

Open weights

Release Timeline

When each model was launched

Gemini 3.1 Pro was released on 2026-02-19, while LongCat-Flash-Chat was released on 2025-08-29.

Gemini 3.1 Pro is 6 months newer than LongCat-Flash-Chat.

Gemini 3.1 Pro

Feb 19, 2026

3 weeks ago

5mo newer

LongCat-Flash-Chat

Aug 29, 2025

6 months ago

Knowledge Cutoff

When training data ends

Gemini 3.1 Pro has a documented knowledge cutoff of 2025-01-31, while LongCat-Flash-Chat's cutoff date is not specified.

We can confirm Gemini 3.1 Pro's training data extends to 2025-01-31, but cannot make a direct comparison without LongCat-Flash-Chat's cutoff date.

Gemini 3.1 Pro

Jan 2025

LongCat-Flash-Chat

—

Provider Availability

Gemini 3.1 Pro is available from Google. LongCat-Flash-Chat is available from Meituan. The availability of providers can affect quality of the model and reliability.