token.app › Compare › DeepSeek V4 Flash 0731 vs Mercury 3

DeepSeek V4 Flash 0731 vs Mercury 3

Mercury 3 is 4.1× 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 0731Mercury 3
ProviderDeepSeekInception
Input $/1M$0.440$0.100
Output $/1M$1.32$0.350
Blended $/1M$0.660$0.163
Context window1.0M1M
Max output131K131K
ReleasedJul 2026Oct 2026
LicenceOpen weightsProprietary
Choose DeepSeek V4 Flash 0731 if…
  • Larger context window (1.0M)
  • Open weights — self-hostable
Choose Mercury 3 if…
  • Costs less per token — $0.163 vs $0.660 blended
  • Newer model (released Oct 2026)
FAQ
Which is better, DeepSeek V4 Flash 0731 or Mercury 3?
We do not hold independently-run benchmark scores covering both DeepSeek V4 Flash 0731 and Mercury 3, so we make no quality claim. Their pricing and specifications are compared on this page.
Is DeepSeek V4 Flash 0731 cheaper than Mercury 3?
Mercury 3 is cheaper: $0.163 versus $0.660 per million tokens blended at 3:1 input:output. Input alone: $0.440 vs $0.100. Output alone: $1.32 vs $0.350.
What context windows do DeepSeek V4 Flash 0731 and Mercury 3 have?
DeepSeek V4 Flash 0731: 1,048,576 tokens. Mercury 3: 1,000,000 tokens.
Who makes DeepSeek V4 Flash 0731 and Mercury 3?
DeepSeek V4 Flash 0731 is made by DeepSeek. Mercury 3 is made by Inception.
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