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Hermes 3 405B vs LongCat-2.5

LongCat-2.5 leads the LLM Stats Score 49.7 to 3.8. LongCat-2.5 is 1.9x cheaper per token.

Nous Research · Meituan · Updated for 2026

Which is better?

LongCat-2.5 leads the overall LLM Stats Score 49.7 to 3.8, ranking #22 overall.

On price, LongCat-2.5 is roughly 1.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

LongCat-2.5 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

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

Choose Hermes 3 405B

  • you need open weights you can self-host or fine-tune

Choose LongCat-2.5

  • overall performance matters — it scores 49.7 and ranks #22 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • cost matters — it's about 1.9x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Nov 2026

At a glance

The differences that matter most.

Hermes 3 405B
Nous Research
LongCat-2.5
Meituan
Core performance indexes
LLM Stats Score
3.8
#345
49.7
#22
Reasoning
3.2
#341
48.0
#23
Cost, coverage & limits
Benchmark wins
—
—
Input price
$1.00 / M
$0.30 / M
Output price
$1.00 / M
$1.20 / M
Context window
131,072
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Hermes 3 405B
LongCat-2.5
Math
6.6#293
37.1#38
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for Hermes 3 405B · 23 for LongCat-2.5

No common benchmarks found

Hermes 3 405B and LongCat-2.5don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

LongCat-2.5 costs less

For input processing, Hermes 3 405B ($1.00/1M tokens) is 3.3x more expensive than LongCat-2.5 ($0.30/1M tokens).

For output processing, Hermes 3 405B ($1.00/1M tokens) is 1.2x cheaper than LongCat-2.5 ($1.20/1M tokens).

In conclusion, Hermes 3 405B is more expensive than LongCat-2.5.*

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

Lowest available price from all providers
Tue Nov 10 2026 • llm-stats.com
Nous Research
Hermes 3 405B
Input tokens$1.00
Output tokens$1.00
Best providerDeepinfra
Meituan
LongCat-2.5
Input tokens$0.30
Output tokens$1.20
Best providerMeituan
Notice missing or incorrect data?

Model Size

Parameter count comparison

1195.0B diff

LongCat-2.5 has 1195.0B more parameters than Hermes 3 405B, making it 295.1% larger.

Nous Research
Hermes 3 405B
405.0Bparameters
Meituan
LongCat-2.5
1.6Tparameters
405.0B
Hermes 3 405B
1600.0B
LongCat-2.5

Context Window

Maximum input and output token capacity

LongCat-2.5 accepts 1,048,576 input tokens compared to Hermes 3 405B's 131,072 tokens. Both models can generate responses up to 131,072 tokens.

Nous Research
Hermes 3 405B
Input131,072 tokens
Output131,072 tokens
Meituan
LongCat-2.5
Input1,048,576 tokens
Output131,072 tokens
Tue Nov 10 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

LongCat-2.5 supports multimodal inputs, whereas Hermes 3 405B does not.

LongCat-2.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Hermes 3 405B

Text
Images
Audio
Video

LongCat-2.5

Text
Images
Audio
Video

Release Timeline

When each model was launched

Hermes 3 405B was released on 2024-10-09, while LongCat-2.5 was released on 2026-11-01.

LongCat-2.5 is 25 months newer than Hermes 3 405B.

Hermes 3 405B

Oct 9, 2024

2.1 years ago

LongCat-2.5

Nov 1, 2026

1 weeks ago

2.1yr newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Hermes 3 405B is available from DeepInfra. LongCat-2.5 is available from Meituan.

Hermes 3 405B

deepinfra logo
Deepinfra
Input Price:Input: $1.00/1MOutput Price:Output: $1.00/1M

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 Hermes 3 405B and LongCat-2.5 side-by-side, then vote on the output you prefer.

Hermes 3 405B
✓ Preferred
LongCat-2.5
Open in Playground

FAQ

Common questions about Hermes 3 405B vs LongCat-2.5.

Which is better, Hermes 3 405B or LongCat-2.5?

LongCat-2.5 leads the LLM Stats Score 49.7 to 3.8. Hermes 3 405B is made by Nous Research 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 Hermes 3 405B compare to LongCat-2.5 in benchmarks?

Hermes 3 405B scores HellaSwag: 90.2%, MT-Bench: 89.3%, BoolQ: 88.9%, Winogrande: 86.3%, ARC-E: 86.2%. 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 Hermes 3 405B cheaper than LongCat-2.5?

LongCat-2.5 is 3.3x cheaper for input tokens. Hermes 3 405B costs $1.00/M input and $1.00/M output via deepinfra. LongCat-2.5 costs $0.30/M input and $1.20/M output via meituan.

What are the context window sizes for Hermes 3 405B and LongCat-2.5?

Hermes 3 405B supports 131K 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 Hermes 3 405B and LongCat-2.5?

Key differences include LLM Stats Score (3.8 vs 49.7), context window (131K vs 1.0M), input pricing ($1.00 vs $0.30/M), multimodal support (no vs yes), licensing (Apache 2.0 vs Unknown). See the full comparison above for benchmark-by-benchmark results.

Who makes Hermes 3 405B and LongCat-2.5?

Hermes 3 405B is developed by Nous Research and LongCat-2.5 is developed by Meituan.

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