Price comparison · checked October 12, 2026

Claude Opus 5.5 vs DeepSeek V4 Pro pricing

For a typical support chatbot (60,000 conversations a month), DeepSeek V4 Pro costs $95.04 a month and Claude Opus 5.5 costs $720. That makes DeepSeek V4 Pro 7.6× cheaper for this workload.

Claude Opus 5.5DeepSeek V4 Pro
ProviderAnthropicDeepSeek
Input / 1M$4.00$0.66
Cached input / 1M$0.20$0.022
Output / 1M$20.00$1.98
Context window1M1M
Notes–Off-peak rate. Peak hours cost 2×

Monthly cost by workload

WorkloadClaude Opus 5.5DeepSeek V4 ProDifference
Support chatbot
60,000 req · 1,500 in / 300 out
$720$95.04DeepSeek V4 Pro 7.6× cheaper
Document summaries
20,000 req · 6,000 in / 400 out
$640$95.04DeepSeek V4 Pro 6.7× cheaper
Coding assistant
30,000 req · 4,000 in / 800 out
$960$127DeepSeek V4 Pro 7.6× cheaper
RAG search
100,000 req · 2,500 in / 250 out
$1,500$214DeepSeek V4 Pro 7.0× cheaper

Standard rates, no caching or batch discounts. Sources: api-docs.deepseek.com · platform.claude.com

Try your own numbers

Start from a use case

1,000 tokens is about 750 English words. Input includes your system prompt, chat history and any retrieved documents.

DeepSeek V4 Pro
DeepSeekCheapest
$95.04 /mo
Claude Opus 5.5
Anthropic
$720 /mo

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