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Gemini 1.5 Flash vs LongCat-2.5

LongCat-2.5 leads the LLM Stats Score 50.0 to 5.5. Gemini 1.5 Flash is 2.0x cheaper per token.

Google · Meituan · Updated for 2026

Which is better?

LongCat-2.5 leads the overall LLM Stats Score 50.0 to 5.5, ranking #20 overall.

In the 1 individual benchmarks reported for both models, LongCat-2.5 wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, Gemini 1.5 Flash is roughly 2.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini 1.5 Flash

  • cost matters — it's about 2.0x cheaper per token

Choose LongCat-2.5

  • overall performance matters — it scores 50.0 and ranks #20 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Nov 2026

At a glance

The differences that matter most.

Gemini 1.5 Flash
Google
LongCat-2.5
Meituan
Core performance indexes
LLM Stats Score
5.5
#333
50.0
#20
Reasoning
5.1
#331
48.3
#21
Coding
-0.5
#279
38.6
#27
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
$0.15 / M
$0.30 / M
Output price
$0.60 / M
$1.20 / M
Context window
1,048,576
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Gemini 1.5 Flash
LongCat-2.5
Math
10.4#273
37.2#37
Vision
5.3#180
32.5#29
Multimodal
8.7#144
34.8#15
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

22 reported for Gemini 1.5 Flash · 23 for LongCat-2.5

1 shared

Gemini 1.5 Flash outperforms in 0 benchmarks, while LongCat-2.5 is better at 1 benchmark (Video-MME).

LongCat-2.5 significantly outperforms across most benchmarks.

Tue Nov 03 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

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 2.0x cheaper than LongCat-2.5 ($0.30/1M tokens).

For output processing, Gemini 1.5 Flash ($0.60/1M tokens) is 2.0x cheaper than LongCat-2.5 ($1.20/1M tokens).

In conclusion, LongCat-2.5 is more expensive than Gemini 1.5 Flash.*

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

Lowest available price from all providers
Tue Nov 03 2026 • llm-stats.com
Google
Gemini 1.5 Flash
Input tokens$0.15
Output tokens$0.60
Best providerGoogle
Meituan
LongCat-2.5
Input tokens$0.30
Output tokens$1.20
Best providerMeituan
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,048,576 tokens. LongCat-2.5 can generate longer responses up to 131,072 tokens, while Gemini 1.5 Flash is limited to 8,192 tokens.

Google
Gemini 1.5 Flash
Input1,048,576 tokens
Output8,192 tokens
Meituan
LongCat-2.5
Input1,048,576 tokens
Output131,072 tokens
Tue Nov 03 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 1.5 Flash and LongCat-2.5 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

LongCat-2.5

Text
Images
Audio
Video

Release Timeline

When each model was launched

Gemini 1.5 Flash was released on 2024-05-01, while LongCat-2.5 was released on 2026-11-01.

LongCat-2.5 is 30 months newer than Gemini 1.5 Flash.

Gemini 1.5 Flash

May 1, 2024

2.5 years ago

LongCat-2.5

Nov 1, 2026

-1 days ago

2.5yr newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash has a documented knowledge cutoff of 2023-11-01, while LongCat-2.5's cutoff date is not specified.

We can confirm Gemini 1.5 Flash's training data extends to 2023-11-01, but cannot make a direct comparison without LongCat-2.5's cutoff date.

Gemini 1.5 Flash

Nov 2023

LongCat-2.5

—

Provider Availability

Gemini 1.5 Flash is available from Google. LongCat-2.5 is available from Meituan.

Gemini 1.5 Flash

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

LongCat-2.5

meituan logo
Meituan
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini 1.5 Flash and LongCat-2.5 side-by-side, then vote on the output you prefer.

Gemini 1.5 Flash
✓ Preferred
LongCat-2.5
Open in Playground

FAQ

Common questions about Gemini 1.5 Flash vs LongCat-2.5.

Which is better, Gemini 1.5 Flash or LongCat-2.5?

LongCat-2.5 leads the LLM Stats Score 50.0 to 5.5. Gemini 1.5 Flash is made by Google and LongCat-2.5 is made by Meituan. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 1.5 Flash compare to LongCat-2.5 in benchmarks?

Gemini 1.5 Flash scores XSTest: 97.0%, FLEURS: 90.4%, HellaSwag: 86.5%, GSM8k: 86.2%, BIG-Bench Hard: 85.5%. LongCat-2.5 scores MathVision: 96.5%, BrowseComp: 91.9%, CharXiv-R: 90.2%, Terminal-Bench 2.1: 88.4%, Video-MME: 85.2%.

Is Gemini 1.5 Flash cheaper than LongCat-2.5?

Gemini 1.5 Flash is 2.0x cheaper for input tokens. Gemini 1.5 Flash costs $0.15/M input and $0.60/M output via google. LongCat-2.5 costs $0.30/M input and $1.20/M output via meituan.

What are the context window sizes for Gemini 1.5 Flash and LongCat-2.5?

Gemini 1.5 Flash supports 1.0M tokens and LongCat-2.5 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 LongCat-2.5?

Key differences include LLM Stats Score (5.5 vs 50.0), input pricing ($0.15 vs $0.30/M), licensing (Proprietary vs Unknown). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 1.5 Flash and LongCat-2.5?

Gemini 1.5 Flash is developed by Google and LongCat-2.5 is developed by Meituan.

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