token.app › Compare › DeepSeek V4 Flash 0731 vs Claude Opus 5 (Fast)

DeepSeek V4 Flash 0731 vs Claude Opus 5 (Fast)

DeepSeek V4 Flash 0731 is 178× 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
DeepSeek V4 Flash 0731Claude Opus 5 (Fast)
ProviderDeepSeekAnthropic
Input $/1M$0.090$10.00
Output $/1M$0.180$50.00
Blended $/1M$0.113$20.00
Context window1.0M1M
Max output384K128K
ReleasedJul 2026Jul 2026
LicenceOpen weightsProprietary
Choose DeepSeek V4 Flash 0731 if…
  • Costs less per token — $0.113 vs $20.00 blended
  • Larger context window (1.0M)
  • Open weights — self-hostable
  • Newer model (released Jul 2026)
Choose Claude Opus 5 (Fast) if…
  • No clear advantage on the data we hold.
FAQ
Which is better, DeepSeek V4 Flash 0731 or Claude Opus 5 (Fast)?
We do not hold independently-run benchmark scores covering both DeepSeek V4 Flash 0731 and Claude Opus 5 (Fast), so we make no quality claim. Their pricing and specifications are compared on this page.
Is DeepSeek V4 Flash 0731 cheaper than Claude Opus 5 (Fast)?
DeepSeek V4 Flash 0731 is cheaper: $0.113 versus $20.00 per million tokens blended at 3:1 input:output. Input alone: $0.090 vs $10.00. Output alone: $0.180 vs $50.00.
What context windows do DeepSeek V4 Flash 0731 and Claude Opus 5 (Fast) have?
DeepSeek V4 Flash 0731: 1,048,576 tokens. Claude Opus 5 (Fast): 1,000,000 tokens.
Who makes DeepSeek V4 Flash 0731 and Claude Opus 5 (Fast)?
DeepSeek V4 Flash 0731 is made by DeepSeek. Claude Opus 5 (Fast) is made by Anthropic.
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