Claude Opus 5.5 vs DeepSeek V4 Pro
Compare Claude Opus 5.5 vs DeepSeek V4 Pro API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
Claude Opus 5.5 charges $4.00/1M input and $20.00/1M output tokens, compared to DeepSeek V4 Pro at $0.66/1M input and $1.98/1M output. DeepSeek V4 Pro is 6.1x cheaper on input tokens. In reasoning benchmarks, Claude Opus 5.5 holds the higher AA Intelligence Index rating (59/100). For latency-critical streaming, Claude Opus 5.5 delivers 112 t/s (351.0s TTFT) while DeepSeek V4 Pro provides 80 t/s (59.0s TTFT).
Full Metric & Specification Comparison
| Metric | Claude Opus 5.5 | DeepSeek V4 Pro | Advantage |
|---|---|---|---|
| Provider | Anthropic | DeepSeek | - |
| Input Token Cost (1M) | $4.000 | $0.660 | DeepSeek V4 Pro |
| Output Token Cost (1M) | $20.000 | $1.980 | DeepSeek V4 Pro |
| Context Window | 1,000k tokens | 1,000k tokens | Tie |
| AA Intelligence Index | 59/100 | 23/100 | Claude Opus 5.5 |
| Streaming Latency | Fast | Moderate | - |
Key Architectural Takeaways
- Input Token Cost: Claude Opus 5.5 is $4.00/1M vs DeepSeek V4 Pro at $0.66/1M
- Output Token Cost: Claude Opus 5.5 is $20.00/1M vs DeepSeek V4 Pro at $1.98/1M
- Context Window: Claude Opus 5.5 supports 1,000k tokens vs DeepSeek V4 Pro with 1,000k tokens
- Benchmark Intelligence Rating: Claude Opus 5.5 scores 59/100 vs DeepSeek V4 Pro at 23/100 (AA Index v5)
- Inference Latency: Claude Opus 5.5 is rated Fast vs DeepSeek V4 Pro rated Moderate
Calculate Your Team's Exact Bill Difference
Drag the sliders below to see real-time cost divergences based on your daily token consumption.
Deploying DeepSeek V4 Pro over Claude Opus 5.5 saves $185.25/mo ($2223/yr) at this volume.
Frequently Asked Questions
Is Claude Opus 5.5 cheaper than DeepSeek V4 Pro?
DeepSeek V4 Pro is significantly more economical, charging $0.66/1M input compared to $4.00/1M for Claude Opus 5.5.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose DeepSeek V4 Pro. If you require peak reasoning accuracy and complex tool use, Claude Opus 5.5 is recommended.
How does context window compare between Claude Opus 5.5 and DeepSeek V4 Pro?
Claude Opus 5.5 offers the larger context window (1,000k tokens), allowing you to pass significantly larger codebases or documents without chunking.
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