DeepSeek V4 Pro vs Claude Sonnet 5.5: price, context window and capabilities
DeepSeek V4 Pro (deepseek/deepseek-v4-pro) is a language model from DeepSeek and Claude Sonnet 5.5 (anthropic/claude-sonnet-5.5) a multimodal language model from Anthropic; both are on the OceanToken API. DeepSeek V4 Pro costs less per token than Claude Sonnet 5.5: $1.056 against $1.80 per 1M input tokens (41% less) and $3.168 against $9.00 per 1M output tokens (65% less). Claude Sonnet 5.5 is 10% off its official price on OceanToken, for every account. DeepSeek V4 Pro has the larger context window: 1.05M tokens (1,048,576) against 1M (1,000,000) for Claude Sonnet 5.5. Both support tool calling, reasoning and structured outputs; only Claude Sonnet 5.5 also lists image input and file input.
Side by side
| Spec | DeepSeek V4 Pro −40% | Claude Sonnet 5.5 −10% |
|---|---|---|
| Model | DeepSeek V4 Prodeepseek/ | Claude Sonnet 5.5anthropic/ |
| Publisher | DeepSeek | Anthropic |
| Kind | Text | Text & vision |
| Context window | 1.05M tokens1,048,576 | 1M tokens1,000,000 |
| Input price | $1.056 / 1M tokens | $1.80 / 1M tokens |
| Output price | $3.168 / 1M tokens | $9.00 / 1M tokens |
| Cached input price | $0.044 / 1M tokens | $0.10 / 1M tokens |
| Cache write price | – | $2.50 / 1M tokens |
| Web search price | – | $0.01 / search |
| Discount (vs official, top tier) | −40% | −10% |
| Inputs | text | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose DeepSeek V4 Pro to spend less per token: 41% less for input and 65% less for output than Claude Sonnet 5.5.
- Choose DeepSeek V4 Pro for the longest inputs: its context window holds 1.05M tokens against 1M for Claude Sonnet 5.5.
- Choose Claude Sonnet 5.5 if you need image input and file input: DeepSeek V4 Pro does not list them.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key DeepSeek V4 Pro Claude Sonnet 5.5
Frequently asked questions
Which is cheaper, DeepSeek V4 Pro or Claude Sonnet 5.5?
DeepSeek V4 Pro. DeepSeek V4 Pro costs less per token than Claude Sonnet 5.5: $1.056 against $1.80 per 1M input tokens (41% less) and $3.168 against $9.00 per 1M output tokens (65% less). Claude Sonnet 5.5 is 10% off its official price on OceanToken, for every account. The OceanToken console always shows the current price.
Which has the larger context window, DeepSeek V4 Pro or Claude Sonnet 5.5?
DeepSeek V4 Pro. DeepSeek V4 Pro has the larger context window: 1.05M tokens (1,048,576) against 1M (1,000,000) for Claude Sonnet 5.5.
Can I call both DeepSeek V4 Pro and Claude Sonnet 5.5 with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id deepseek/deepseek-v4-pro or anthropic/claude-sonnet-5.5.
Models and publishers
DeepSeek V4 Pro · Claude Sonnet 5.5 · All DeepSeek models · All Anthropic models
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