DeepSeek V4 Pro vs Claude Sonnet 4.5
Open-source 1.6T-parameter MoE with 49B active, built for advanced reasoning and long-horizon agents.
High-performance model for real-world agents and coding.
No captured outputs for these models yet.
Frequently Asked Questions: DeepSeek V4 Pro vs Claude Sonnet 4.5▼
Which is better, DeepSeek V4 Pro or Claude Sonnet 4.5?
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Based on the Capability Index, DeepSeek V4 Pro scores higher (81.6 vs 78.9). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, DeepSeek V4 Pro or Claude Sonnet 4.5?
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DeepSeek V4 Pro has a lower blended cost. DeepSeek V4 Pro: $0.43 input / $0.87 output. Claude Sonnet 4.5: $3.00 input / $15.00 output.
Which has a larger context window, DeepSeek V4 Pro or Claude Sonnet 4.5?
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DeepSeek V4 Pro has a larger context window: DeepSeek V4 Pro supports 1M tokens vs Claude Sonnet 4.5 at 1M tokens.
Do both DeepSeek V4 Pro and Claude Sonnet 4.5 support vision?
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Claude Sonnet 4.5 supports vision/image input, but DeepSeek V4 Pro does not.
Which has better coding performance, DeepSeek V4 Pro or Claude Sonnet 4.5?
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DeepSeek V4 Pro scores higher on SWE-bench Verified: DeepSeek V4 Pro resolves 78% vs Claude Sonnet 4.5 at 71%.
What are the key differences between DeepSeek V4 Pro and Claude Sonnet 4.5?
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Key differences: DeepSeek V4 Pro is significantly cheaper; only Claude Sonnet 4.5 supports vision input. Compare full specs on this page.
Which model should I choose for my use case?
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If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both DeepSeek V4 Pro and Claude Sonnet 4.5 for free on idapt.app to see which performs better for your specific needs.