For 10,000 requests of 2,000 tokens in and 500 out, DeepSeek V4 Pro 0813 costs 81% less than Claude Sonnet 5.5 on Zurelay: $7.70 against $40.50. Both are below their labs' list prices: 84% for DeepSeek V4 Pro 0813 and 55% for Claude Sonnet 5.5.
Side by side
| DeepSeek V4 Pro 0813 | Claude Sonnet 5.5 | |
|---|---|---|
| Lab | DeepSeek | Anthropic |
| Released | Aug 13, 2026 | Sep 28, 2026 |
| Context window | 1M tokens | 1M tokens |
| Max output | 384K tokens | 128K tokens |
| Reads | Text | Text, Images, PDFs |
| Reasoning levels | none, low, high, max | low, medium, high, xhigh, max |
| Price per 1M, in / out | $0.23 / $0.62 | $0.90 / $4.50 |
| Lab list price | $1.32 / $3.96 | $2.00 / $10.00 |
| Cached input per 1M | $0.00759 | $0.09 |
| 10K typical requests | $7.70 | $40.50 |
Prices in US dollars per 1M tokens on Zurelay, live from the catalog. A typical request is 2,000 tokens in and 500 out. Output limits are each lab's.
What they're for
DeepSeek V4 Pro 0813 is the official August 13, 2026 release of DeepSeek V4 Pro, a 1.6-trillion-parameter open-weight model built for coding and agents. It is the model DeepSeek's own API serves as deepseek-v4-pro. The Zurelay DeepSeek V4 Pro API runs it through one OpenAI-compatible endpoint at 84% below DeepSeek's peak list price.
Claude Sonnet 5.5 is Anthropic's current Sonnet model, which Anthropic calls its best combination of speed and intelligence. The Zurelay Claude Sonnet 5.5 API serves it through an OpenAI-compatible or Anthropic-compatible endpoint at 55% below list price, for teams running coding, agent and document work at volume.
Try both
Specs don't say which model handles your work better. Send the same requests to both and compare the answers, the tokens and the bill. On Zurelay that's a change of model name.
Every model from both labs is on DeepSeek vs Claude. To price a whole month, use the LLM cost calculator.
from openai import OpenAIclient = OpenAI(base_url="https://api.zurelay.com/v1", api_key="YOUR_ZURELAY_KEY")prompt = [{"role": "user", "content": "Summarize this contract: ..."}]# Same key, same code: only the model name changesfor model in ["deepseek-v4-pro-0813", "claude-sonnet-5-5"]: reply = client.chat.completions.create(model=model, messages=prompt) print(model, reply.usage.total_tokens, reply.choices[0].message.content[:200])FAQ
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For 10,000 requests of 2,000 tokens in and 500 out, DeepSeek V4 Pro 0813 costs 81% less than Claude Sonnet 5.5 on Zurelay: $7.70 against $40.50. Per 1M tokens, DeepSeek V4 Pro 0813 is $0.23 input and $0.62 output, and Claude Sonnet 5.5 is $0.90 and $4.50.
They're the same on Zurelay: 1M tokens each.
Yes. One Zurelay key calls both. With an OpenAI SDK, point it at https://api.zurelay.com/v1 and change only the model name, deepseek-v4-pro-0813 or claude-sonnet-5-5, to switch.
Yes. Each model is served over several routes run by independent sellers, and every route is tested before it serves requests and every day after, with identity, dated-knowledge and reasoning checks that catch an older or different model sold under the name you asked for.
Create a key in seconds, point the SDK you already use at Zurelay, and every request costs up to 90% less from the first token.