Choose DeepSeek V4 Pro if
- ✓ You need 1M-token text reasoning at a lower cost
- ✓ Your workload is research, extraction or document pipelines
- ✓ Cost limits prevent a premium model from being practical
Head to head · OpenRouter
DeepSeek V4 Pro vs Claude Opus 5
Claude Opus 5 is the premium reasoning option, while DeepSeek V4 Pro offers a 1M-token text workflow at a much lower price.
Quick verdict
DeepSeek V4 Pro is attractive for cost-sensitive long-document reasoning. Claude Opus 5 is better when the task is hard enough to justify premium reasoning and agent behavior.
Side-by-side comparison
| Field | DeepSeek V4 Pro | Claude Opus 5 |
|---|---|---|
| Provider | DeepSeek | Anthropic |
| Context window | 1.05M tokens | 1M tokens |
| Input / 1M | $1.32 | $5.00 |
| Output / 1M | $3.96 | $25.00 |
| Modalities | Text | Text, Vision, Files |
| Best for | Long Context, Budget, Agents | Overall, Agents, Coding |
Source
openrouter.ai/api/v1/models Verified 2026-10-16 Cost estimates
| Workload | Input | Output | DeepSeek V4 Pro | Claude Opus 5 |
|---|---|---|---|---|
| Quick test | 20,000 | 5,000 | $0.046 | $0.225 |
| Product chat month | 500,000 | 125,000 | $1.16 | $5.63 |
| Document batch | 5,000,000 | 1,000,000 | $10.56 | $50.00 |
Estimates use list input/output prices and exclude cache discounts, provider surcharges and tool fees.
Choose Claude Opus 5 if
- ✓ You need the strongest reasoning in this snapshot
- ✓ Your agents require complex multi-step reliability
- ✓ The cost is justified by task value
FAQ
Is DeepSeek V4 Pro cheaper than Claude Opus 5?
DeepSeek V4 Pro costs $1.32 input and $3.96 output per 1M tokens. Claude Opus 5 costs $5.00 input and $25.00 output per 1M tokens.
Which model has the larger context window?
DeepSeek V4 Pro offers 1.05M tokens; Claude Opus 5 offers 1M tokens. Provider-specific limits can vary by route.
Which one should I choose?
DeepSeek V4 Pro is attractive for cost-sensitive long-document reasoning. Claude Opus 5 is better when the task is hard enough to justify premium reasoning and agent behavior.
DeepSeek V4 Pro details Claude Opus 5 details Estimate monthly cost
Pricing and context data are based on a 2026-10-16 snapshot. Provider limits and pricing can change; verify on OpenRouter before production.