Price comparison · checked October 12, 2026

Claude Fable 5.1 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 Fable 5.1 costs $1,800. That makes DeepSeek V4 Pro 19× cheaper for this workload.

Claude Fable 5.1DeepSeek V4 Pro
ProviderAnthropicDeepSeek
Input / 1M$10.00$0.66
Cached input / 1M$0.25$0.022
Output / 1M$50.00$1.98
Context window1M1M
Notes–Off-peak rate. Peak hours cost 2×

Monthly cost by workload

WorkloadClaude Fable 5.1DeepSeek V4 ProDifference
Support chatbot
60,000 req · 1,500 in / 300 out
$1,800$95.04DeepSeek V4 Pro 19× cheaper
Document summaries
20,000 req · 6,000 in / 400 out
$1,600$95.04DeepSeek V4 Pro 17× cheaper
Coding assistant
30,000 req · 4,000 in / 800 out
$2,400$127DeepSeek V4 Pro 19× cheaper
RAG search
100,000 req · 2,500 in / 250 out
$3,750$214DeepSeek V4 Pro 17× 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 Fable 5.1
Anthropic
$1,800 /mo

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