The AI arena is free today

Open Superagent

Claude Opus 4.5 vs Nemotron 3.5 Bolt (74B A9B 24GB)

Claude Opus 4.5 leads the LLM Stats Score 37.9 to 29.6.

Anthropic · NVIDIA · Updated for 2026

Which is better?

Claude Opus 4.5 leads the overall LLM Stats Score 37.9 to 29.6, ranking #84 overall.

In the 2 individual benchmarks reported for both models, Claude Opus 4.5 wins 2; this is a narrower head-to-head signal than the composite indexes.

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

Choose Claude Opus 4.5

  • overall performance matters — it scores 37.9 and ranks #84 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results

Choose Nemotron 3.5 Bolt (74B A9B 24GB)

  • you want the most recent training data — it shipped Oct 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Opus 4.5
Anthropic
Nemotron 3.5 Bolt (74B A9B 24GB)
NVIDIA
Core performance indexes
LLM Stats Score
37.9
#84
29.6
#146
Reasoning
39.8
#70
28.9
#146
Coding
27.6
#75
14.4
#154
Agents
17.4
#95
11.9
#127
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
$5.00 / M
— / M
Output price
$25.00 / M
— / M
Context window
200,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
Claude Opus 4.5
Nemotron 3.5 Bolt (74B A9B 24GB)
Math
32.4#64
23.4#140
Tool use
20.7#64
5.4#169
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

11 reported for Claude Opus 4.5 · 10 for Nemotron 3.5 Bolt (74B A9B 24GB)

2 shared

Claude Opus 4.5 outperforms in 2 benchmarks (GPQA, MCP Atlas), while Nemotron 3.5 Bolt (74B A9B 24GB) is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Thu Oct 22 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Claude Opus 4.5 specifies input context (200,000 tokens). Only Claude Opus 4.5 specifies output context (64,000 tokens).

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
NVIDIA
Nemotron 3.5 Bolt (74B A9B 24GB)
Input- tokens
Output- tokens
Thu Oct 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 4.5 and Nemotron 3.5 Bolt (74B A9B 24GB) support multimodal inputs.

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

Claude Opus 4.5

Text
Images
Audio
Video

Nemotron 3.5 Bolt (74B A9B 24GB)

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while Nemotron 3.5 Bolt (74B A9B 24GB) uses OpenMDW License v1.1.

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

Claude Opus 4.5

Proprietary

Closed source

Nemotron 3.5 Bolt (74B A9B 24GB)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Nemotron 3.5 Bolt (74B A9B 24GB) was released on 2026-10-15.

Nemotron 3.5 Bolt (74B A9B 24GB) is 11 months newer than Claude Opus 4.5.

Claude Opus 4.5

Nov 24, 2025

11 months ago

Nemotron 3.5 Bolt (74B A9B 24GB)

Oct 15, 2026

1 weeks ago

10mo newer

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a knowledge cutoff of 2025-03-31, while Nemotron 3.5 Bolt (74B A9B 24GB) has a cutoff of 2026-05-01.

Nemotron 3.5 Bolt (74B A9B 24GB) has more recent training data (up to 2026-05-01), making it potentially better informed about events through that date compared to Claude Opus 4.5 (2025-03-31).

Claude Opus 4.5

Mar 2025

Nemotron 3.5 Bolt (74B A9B 24GB)

May 2026

1.2 yr newer

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Opus 4.5 and Nemotron 3.5 Bolt (74B A9B 24GB) side-by-side, then vote on the output you prefer.

Claude Opus 4.5
✓ Preferred
Nemotron 3.5 Bolt (74B A9B 24GB)
Open in Playground

FAQ

Common questions about Claude Opus 4.5 vs Nemotron 3.5 Bolt (74B A9B 24GB).

Which is better, Claude Opus 4.5 or Nemotron 3.5 Bolt (74B A9B 24GB)?

Claude Opus 4.5 leads the LLM Stats Score 37.9 to 29.6. Claude Opus 4.5 is made by Anthropic and Nemotron 3.5 Bolt (74B A9B 24GB) is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Opus 4.5 compare to Nemotron 3.5 Bolt (74B A9B 24GB) in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. Nemotron 3.5 Bolt (74B A9B 24GB) scores PinchBench: 87.8%, GPQA: 86.4%, BrowseComp: 66.8%, AA-LCR: 64.1%, MCP Atlas: 52.2%.

What are the context window sizes for Claude Opus 4.5 and Nemotron 3.5 Bolt (74B A9B 24GB)?

Claude Opus 4.5 supports 200K tokens and Nemotron 3.5 Bolt (74B A9B 24GB) supports an unknown number of 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 4.5 and Nemotron 3.5 Bolt (74B A9B 24GB)?

Key differences include LLM Stats Score (37.9 vs 29.6), licensing (Proprietary vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Nemotron 3.5 Bolt (74B A9B 24GB)?

Claude Opus 4.5 is developed by Anthropic and Nemotron 3.5 Bolt (74B A9B 24GB) is developed by NVIDIA.

Related comparisons