Model Comparison

Claude Haiku 4.5 vs Nemotron Nano 9B v2Which is better in 2026?

Claude Haiku 4.5 significantly outperforms across most benchmarks.

Verdict: Claude Haiku 4.5 vs Nemotron Nano 9B v2 — which is better?

Claude Haiku 4.5 (by Anthropic) and Nemotron Nano 9B v2 (by NVIDIA) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Claude Haiku 4.5 outperforms in 2 benchmarks (AIME 2025, GPQA), while Nemotron Nano 9B v2 is better at 0 benchmarks. Claude Haiku 4.5 significantly outperforms across most benchmarks.

Choose Claude Haiku 4.5 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Oct 2025

Choose Nemotron Nano 9B v2 if…

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

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Claude Haiku 4.5 outperforms in 2 benchmarks (AIME 2025, GPQA), while Nemotron Nano 9B v2 is better at 0 benchmarks.

Claude Haiku 4.5 significantly outperforms across most benchmarks.

Mon Jul 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

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

Anthropic
Claude Haiku 4.5
Input200,000 tokens
Output64,000 tokens
NVIDIA
Nemotron Nano 9B v2
Input- tokens
Output- tokens
Mon Jul 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Haiku 4.5 supports multimodal inputs, whereas Nemotron Nano 9B v2 does not.

Claude Haiku 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Haiku 4.5

Text
Images
Audio
Video

Nemotron Nano 9B v2

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Haiku 4.5 is licensed under a proprietary license, while Nemotron Nano 9B v2 uses NVIDIA Open Model License Agreement .

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

Claude Haiku 4.5

Proprietary

Closed source

Nemotron Nano 9B v2

NVIDIA Open Model License Agreement

Open weights

Release Timeline

When each model was launched

Claude Haiku 4.5 was released on 2025-10-15, while Nemotron Nano 9B v2 was released on 2025-08-18.

Claude Haiku 4.5 is 2 months newer than Nemotron Nano 9B v2.

Claude Haiku 4.5

Oct 15, 2025

9 months ago

1mo newer
Nemotron Nano 9B v2

Aug 18, 2025

10 months ago

Knowledge Cutoff

When training data ends

Claude Haiku 4.5 has a knowledge cutoff of 2025-02-01, while Nemotron Nano 9B v2 has a cutoff of 2024-09-01.

Claude Haiku 4.5 has more recent training data (up to 2025-02-01), making it potentially better informed about events through that date compared to Nemotron Nano 9B v2 (2024-09-01).

Claude Haiku 4.5

Feb 2025

5 mo newer
Nemotron Nano 9B v2

Sep 2024

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher AIME 2025 score (80.7% vs 72.1%)
Higher GPQA score (73.0% vs 64.0%)
NVIDIA
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Haiku 4.5 and Nemotron Nano 9B v2 side-by-side, then vote on the output you prefer.

Claude Haiku 4.5
✓ Preferred
Nemotron Nano 9B v2
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Haiku 4.5
NVIDIA
Nemotron Nano 9B v2

FAQ

Common questions about Claude Haiku 4.5 vs Nemotron Nano 9B v2.

Which is better, Claude Haiku 4.5 or Nemotron Nano 9B v2?

Claude Haiku 4.5 significantly outperforms across most benchmarks. Claude Haiku 4.5 is made by Anthropic and Nemotron Nano 9B v2 is made by NVIDIA. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Haiku 4.5 compare to Nemotron Nano 9B v2 in benchmarks?

Claude Haiku 4.5 scores Tau2 Retail: 83.2%, MMMLU: 83.0%, Tau2 Telecom: 83.0%, AIME 2025: 80.7%, SWE-Bench Verified: 73.3%. Nemotron Nano 9B v2 scores MATH-500: 97.8%, IFEval: 90.3%, AIME 2025: 72.1%, LiveCodeBench: 71.1%, BFCL_v3_MultiTurn: 66.9%.

What are the context window sizes for Claude Haiku 4.5 and Nemotron Nano 9B v2?

Claude Haiku 4.5 supports 200K tokens and Nemotron Nano 9B v2 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 Haiku 4.5 and Nemotron Nano 9B v2?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs NVIDIA Open Model License Agreement ). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Haiku 4.5 and Nemotron Nano 9B v2?

Claude Haiku 4.5 is developed by Anthropic and Nemotron Nano 9B v2 is developed by NVIDIA.

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