tokevenClaudevsDeepSeek
Claude Sonnet 5 vs DeepSeek Flash
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 5
Mid-tierDeepSeek Flash
Fast / BudgetInput $/MTok
$2.00
$0.15
Output $/MTok
$10.00
$0.60
Cache discount
90% off
98% off
Context
1M
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
68
vs
0
Code Review
96
vs
0
Summarization
64
vs
0
Q&A
89
vs
0
Extraction
70
vs
0
Reasoning
89
vs
0
Classification
86
vs
0
Creative Writing
62
vs
0
Claude Sonnet 5
DeepSeek Flash
Guidance
When to use Claude Sonnet 5 vs DeepSeek Flash
Choose Claude Sonnet 5 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose DeepSeek Flash when...
- -Cost matters: 93% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 5
DeepSeek Flash
100K tokens
$0.44
$0.03Cheaper
1M tokens
$4.40
$0.28Cheaper
10M tokens
$44.00
$2.85Cheaper
FAQ
When should I use Claude Sonnet 5 instead of DeepSeek Flash?
Claude Sonnet 5 and DeepSeek Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is DeepSeek Flash cheaper than Claude Sonnet 5?
Yes. DeepSeek Flash input costs $0.15/MTok vs $2.00/MTok for Claude Sonnet 5, saving 93% on input.
What are the context window sizes for Claude Sonnet 5 and DeepSeek Flash?
Claude Sonnet 5 has a 1M token context window. DeepSeek Flash 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 5 and DeepSeek Flash 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.