Claude Sonnet 5.5 vs DeepSeek V4 Pro pricing
- For the Chatbot workload, DeepSeek V4 Pro costs 2.1× less than Claude Sonnet 5.5.
- For the RAG workload, DeepSeek V4 Pro costs 1.7× less than Claude Sonnet 5.5.
- For the Coding agent workload, DeepSeek V4 Pro costs 1.9× less than Claude Sonnet 5.5.
Prices
| USD per 1M tokens | Claude Sonnet 5.5 | DeepSeek V4 Pro |
|---|---|---|
| Input | $2.00 | $1.32 |
| Output | $10.00 | $3.96 |
| Cache read | $0.10 | $0.044 |
| Cache write | $2.50 | Not published |
| Batch input | $1.00 | Not published |
| Batch output | $5.00 | Not published |
| Off-peak input | Not published | $0.66 |
| Off-peak output | Not published | $1.98 |
| Off-peak cache read | Not published | $0.022 |
DeepSeek V4 Pro: The Input, Output and Cache read rows are the standard (peak) prices; the Off-peak rows apply at other times. Off-peak is every hour outside 01:00–04:00 and 06:00–10:00 UTC on weekdays, plus weekends and Chinese public holidays.
Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page
Monthly cost by workload
| Workload | Claude Sonnet 5.5 | DeepSeek V4 Pro |
|---|---|---|
| Chatbot1,000 in / 500 out tokens, 10,000 requests a day | $2,100/mo | $990.00/mo |
| RAG8,000 in / 500 out tokens, 5,000 requests a day | $3,150/mo | $1,881/mo |
| Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input | $1,320/mo | $686.40/mo |
Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.
Context and capabilities
| Claude Sonnet 5.5 | DeepSeek V4 Pro | |
|---|---|---|
| Context | 1,000,000 tokens | 1,000,000 tokens |
| Max output | 128,000 tokens | 393,216 tokens |
| Input | text, image, pdf | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
Questions
- What is the price difference between Claude Sonnet 5.5 and DeepSeek V4 Pro?
- Claude Sonnet 5.5: $2.00 per 1M input tokens and $10.00 per 1M output tokens. DeepSeek V4 Pro: $1.32 per 1M input tokens and $3.96 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $2,100 per month for Claude Sonnet 5.5 and $990.00 for DeepSeek V4 Pro.
- Which has the longer context window, Claude Sonnet 5.5 or DeepSeek V4 Pro?
- Both accept up to 1,000,000 tokens of context.
- Do Claude Sonnet 5.5 and DeepSeek V4 Pro have prompt caching and batch prices?
- Claude Sonnet 5.5: cached input $0.10 per 1M tokens; batch $1.00 per 1M input tokens and $5.00 per 1M output tokens. DeepSeek V4 Pro: cached input $0.044 per 1M tokens; no batch price published.