token.app › Compare › Claude Sonnet 4.5 (batch) vs DeepSeek V4 Flash 0731

Claude Sonnet 4.5 (batch) vs DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is 27× cheaper per token on a blended 3:1 basis. DeepSeek V4 Flash 0731 accepts the larger context window (1.0M).

Head to head
Blended price uses a 3:1 input:output mix
Claude Sonnet 4.5 (batch)DeepSeek V4 Flash 0731
ProviderAnthropicDeepSeek
Input $/1M$1.50$0.090
Output $/1M$7.50$0.180
Blended $/1M$3.00$0.113
Context window1M1.0M
Max output64K384K
ReleasedSep 2025Jul 2026
LicenceProprietaryOpen weights
Choose Claude Sonnet 4.5 (batch) if…
  • No clear advantage on the data we hold.
Choose DeepSeek V4 Flash 0731 if…
  • Costs less per token — $0.113 vs $3.00 blended
  • Larger context window (1.0M)
  • Open weights — self-hostable
  • Newer model (released Jul 2026)
FAQ
Which is better, Claude Sonnet 4.5 (batch) or DeepSeek V4 Flash 0731?
We do not hold independently-run benchmark scores covering both Claude Sonnet 4.5 (batch) and DeepSeek V4 Flash 0731, so we make no quality claim. Their pricing and specifications are compared on this page.
Is Claude Sonnet 4.5 (batch) cheaper than DeepSeek V4 Flash 0731?
DeepSeek V4 Flash 0731 is cheaper: $0.113 versus $3.00 per million tokens blended at 3:1 input:output. Input alone: $1.50 vs $0.090. Output alone: $7.50 vs $0.180.
What context windows do Claude Sonnet 4.5 (batch) and DeepSeek V4 Flash 0731 have?
Claude Sonnet 4.5 (batch): 1,000,000 tokens. DeepSeek V4 Flash 0731: 1,048,576 tokens.
Who makes Claude Sonnet 4.5 (batch) and DeepSeek V4 Flash 0731?
Claude Sonnet 4.5 (batch) is made by Anthropic. DeepSeek V4 Flash 0731 is made by DeepSeek.
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