tokevenClaudevsDeepSeek
Claude Sonnet 4.5 vs DeepSeek V4 Pro
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 4.5
Mid-tierDeepSeek V4 Pro
FlagshipInput $/MTok
$3.00
$0.66
Output $/MTok
$15.00
$1.98
Cache discount
90% off
97% off
Context
200K
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
Claude Sonnet 4.5
DeepSeek V4 Pro
Guidance
When to use Claude Sonnet 4.5 vs DeepSeek V4 Pro
Choose Claude Sonnet 4.5 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose DeepSeek V4 Pro when...
- -Cost matters: 78% cheaper on input tokens
- -You need a larger context window (1M vs 200K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 4.5
DeepSeek V4 Pro
100K tokens
$0.66
$0.11Cheaper
1M tokens
$6.60
$1.06Cheaper
10M tokens
$66.00
$10.56Cheaper
FAQ
When should I use Claude Sonnet 4.5 instead of DeepSeek V4 Pro?
Claude Sonnet 4.5 and DeepSeek V4 Pro perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is DeepSeek V4 Pro cheaper than Claude Sonnet 4.5?
Yes. DeepSeek V4 Pro input costs $0.66/MTok vs $3.00/MTok for Claude Sonnet 4.5, saving 78% on input.
What are the context window sizes for Claude Sonnet 4.5 and DeepSeek V4 Pro?
Claude Sonnet 4.5 has a 200K token context window. DeepSeek V4 Pro has a 1M token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How Claude Sonnet 4.5 and DeepSeek V4 Pro stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.