Nemotron 4 340BvsClaude Opus 4
NVIDIA vs Anthropic — Side-by-side model comparison
Head-to-Head Comparison
| Metric | Nemotron 4 340B | Claude Opus 4 |
|---|---|---|
| Provider | NVIDIA | |
| Arena Rank | — | #1 |
| Context Window | 4K | 200K |
| Input Pricing | Free (open)/1M tokens | $5.00/1M tokens |
| Output Pricing | Free (open)/1M tokens | $25.00/1M tokens |
| Parameters | 340B | Undisclosed |
| Open Source | Yes | No |
| Best For | Synthetic data generation, training pipelines | Complex reasoning, coding, agentic tasks |
| Release Date | Jun 14, 2024 | May 22, 2025 |
Nemotron 4 340B
Nemotron 4 340B, developed by NVIDIA, is an open-source model with 340 billion parameters and a 4K token context window designed for synthetic data generation and AI training pipelines. The model excels at generating high-quality synthetic training data that can be used to train smaller, more efficient models. NVIDIA built Nemotron specifically to address the data bottleneck in AI development, where access to quality training data often limits model performance. The model demonstrates strong performance on general reasoning tasks while being particularly optimized for producing diverse, accurate synthetic datasets. Free and open-source, it can be deployed on NVIDIA GPU infrastructure. Nemotron 4 340B represents NVIDIA's strategy of contributing to the AI ecosystem beyond hardware, providing tools that make their GPU platforms more valuable for AI development workflows.
Claude Opus 4
Claude Opus 4 is Anthropic's most powerful AI model, holding the #1 position on the Chatbot Arena leaderboard. It represents a breakthrough in extended thinking and agentic capabilities, able to work autonomously on complex multi-step tasks for hours. With a 200K token context window, it excels at analyzing entire codebases, lengthy legal documents, and research papers in a single pass. The model demonstrates exceptional performance in coding (setting new benchmarks on SWE-bench), advanced reasoning, and nuanced writing tasks. Its agentic capabilities allow it to use tools, navigate computers, and execute multi-step workflows with minimal human oversight. Opus 4 is the preferred choice for enterprises requiring the highest quality output on mission-critical tasks where accuracy and depth matter more than speed or cost.
View Anthropic profile →Key Differences: Nemotron 4 340B vs Claude Opus 4
Claude Opus 4 supports a larger context window (200K), allowing it to process longer documents in a single request.
Nemotron 4 340B is open-source (free to self-host and fine-tune) while Claude Opus 4 is proprietary (API-only access).
When to use Nemotron 4 340B
- +You need to self-host or fine-tune the model
- +Your use case involves synthetic data generation, training pipelines
When to use Claude Opus 4
- +You need to process long documents (200K context)
- +You prefer a managed API without infrastructure overhead
- +Your use case involves complex reasoning, coding, agentic tasks
The Verdict
Claude Opus 4 wins our head-to-head comparison with 4 out of 5 category wins. It's the stronger choice for complex reasoning, coding, agentic tasks, though Nemotron 4 340B holds an edge in synthetic data generation, training pipelines.
Last compared: April 2026 · Data sourced from public benchmarks and official pricing pages