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Claude Opus 5.5 vs Hermes 3 70B

Claude Opus 5.5 leads the LLM Stats Score 59.7 to 4.0. Hermes 3 70B is 11.4x cheaper per token.

Anthropic · Nous Research · Updated for 2026

Which is better?

Claude Opus 5.5 leads the overall LLM Stats Score 59.7 to 4.0, ranking #1 overall.

On price, Hermes 3 70B is roughly 11.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 5.5 also accepts a larger context window (1,000,000 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 Claude Opus 5.5

  • overall performance matters — it scores 59.7 and ranks #1 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose Hermes 3 70B

  • cost matters — it's about 11.4x cheaper per token
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Opus 5.5
Anthropic
Hermes 3 70B
Nous Research
Core performance indexes
LLM Stats Score
59.7
#1
4.0
#310
Reasoning
57.8
#1
1.3
#319
Cost, coverage & limits
Benchmark wins
—
—
Input price
$4.00 / M
$0.70 / M
Output price
$20.00 / M
$0.70 / M
Context window
1,000,000
131,072

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude Opus 5.5
Hermes 3 70B
Math
42.5#5
-1.1#302
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

31 reported for Claude Opus 5.5 · 17 for Hermes 3 70B

No common benchmarks found

Claude Opus 5.5 and Hermes 3 70Bdon'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

Hermes 3 70B costs less

For input processing, Claude Opus 5.5 ($4.00/1M tokens) is 5.7x more expensive than Hermes 3 70B ($0.70/1M tokens).

For output processing, Claude Opus 5.5 ($20.00/1M tokens) is 28.6x more expensive than Hermes 3 70B ($0.70/1M tokens).

In conclusion, Claude Opus 5.5 is more expensive than Hermes 3 70B.*

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

Lowest available price from all providers
Tue Sep 22 2026 • llm-stats.com
Anthropic
Claude Opus 5.5
Input tokens$4.00
Output tokens$20.00
Best providerAnthropic
Nous Research
Hermes 3 70B
Input tokens$0.70
Output tokens$0.70
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 5.5 accepts 1,000,000 input tokens compared to Hermes 3 70B's 131,072 tokens. Hermes 3 70B can generate longer responses up to 131,072 tokens, while Claude Opus 5.5 is limited to 128,000 tokens.

Anthropic
Claude Opus 5.5
Input1,000,000 tokens
Output128,000 tokens
Nous Research
Hermes 3 70B
Input131,072 tokens
Output131,072 tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Opus 5.5 supports multimodal inputs, whereas Hermes 3 70B does not.

Claude Opus 5.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 5.5

Text
Images
Audio
Video

Hermes 3 70B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5.5 is licensed under a proprietary license, while Hermes 3 70B uses Apache 2.0.

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

Claude Opus 5.5

Proprietary

Closed source

Hermes 3 70B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Opus 5.5 was released on 2026-09-22, while Hermes 3 70B was released on 2024-08-15.

Claude Opus 5.5 is 26 months newer than Hermes 3 70B.

Claude Opus 5.5

Sep 22, 2026

0 days ago

2.1yr newer
Hermes 3 70B

Aug 15, 2024

2.1 years ago

Knowledge Cutoff

When training data ends

Claude Opus 5.5 has a documented knowledge cutoff of 2026-06-01, while Hermes 3 70B's cutoff date is not specified.

We can confirm Claude Opus 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without Hermes 3 70B's cutoff date.

Claude Opus 5.5

Jun 2026

Hermes 3 70B

—

Provider Availability

Claude Opus 5.5 is available from Anthropic. Hermes 3 70B is available from DeepInfra.

Claude Opus 5.5

anthropic logo
Anthropic
Input Price:Input: $4.00/1MOutput Price:Output: $20.00/1M

Hermes 3 70B

deepinfra logo
Deepinfra
Input Price:Input: $0.70/1MOutput Price:Output: $0.70/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Opus 5.5 and Hermes 3 70B side-by-side, then vote on the output you prefer.

Claude Opus 5.5
✓ Preferred
Hermes 3 70B
Open in Playground

FAQ

Common questions about Claude Opus 5.5 vs Hermes 3 70B.

Which is better, Claude Opus 5.5 or Hermes 3 70B?

Claude Opus 5.5 leads the LLM Stats Score 59.7 to 4.0. Claude Opus 5.5 is made by Anthropic and Hermes 3 70B is made by Nous Research. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Opus 5.5 compare to Hermes 3 70B in benchmarks?

Claude Opus 5.5 scores BenchCAD (with Python tool): 96.2%, Global-MMLU: 94.3%, SWE-bench Multilingual: 93.9%, MILU: 93.1%, ArXivMath: 91.2%. Hermes 3 70B scores MT-Bench: 89.9%, HellaSwag: 88.2%, BoolQ: 88.0%, PIQA: 84.4%, Winogrande: 83.2%.

Is Claude Opus 5.5 cheaper than Hermes 3 70B?

Hermes 3 70B is 5.7x cheaper for input tokens. Claude Opus 5.5 costs $4.00/M input and $20.00/M output via anthropic. Hermes 3 70B costs $0.70/M input and $0.70/M output via deepinfra.

What are the context window sizes for Claude Opus 5.5 and Hermes 3 70B?

Claude Opus 5.5 supports 1.0M tokens and Hermes 3 70B supports 131K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Opus 5.5 and Hermes 3 70B?

Key differences include LLM Stats Score (59.7 vs 4.0), context window (1.0M vs 131K), input pricing ($4.00 vs $0.70/M), multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5.5 and Hermes 3 70B?

Claude Opus 5.5 is developed by Anthropic and Hermes 3 70B is developed by Nous Research.

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