token.app › Compare › DeepSeek V3.1 Terminus vs DeepSeek V4 Flash 0731

DeepSeek V3.1 Terminus vs DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is 4.0× 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 V3.1 TerminusDeepSeek V4 Flash 0731
ProviderDeepSeekDeepSeek
Input $/1M$0.270$0.090
Output $/1M$1.00$0.180
Blended $/1M$0.453$0.113
Context window164K1.0M
Max output33K384K
ReleasedSep 2025Jul 2026
LicenceOpen weightsOpen weights
Choose DeepSeek V3.1 Terminus if…
  • No clear advantage on the data we hold.
Choose DeepSeek V4 Flash 0731 if…
  • Costs less per token — $0.113 vs $0.453 blended
  • Larger context window (1.0M)
  • Newer model (released Jul 2026)
FAQ
Which is better, DeepSeek V3.1 Terminus or DeepSeek V4 Flash 0731?
We do not hold independently-run benchmark scores covering both DeepSeek V3.1 Terminus and DeepSeek V4 Flash 0731, so we make no quality claim. Their pricing and specifications are compared on this page.
Is DeepSeek V3.1 Terminus cheaper than DeepSeek V4 Flash 0731?
DeepSeek V4 Flash 0731 is cheaper: $0.113 versus $0.453 per million tokens blended at 3:1 input:output. Input alone: $0.270 vs $0.090. Output alone: $1.00 vs $0.180.
What context windows do DeepSeek V3.1 Terminus and DeepSeek V4 Flash 0731 have?
DeepSeek V3.1 Terminus: 163,840 tokens. DeepSeek V4 Flash 0731: 1,048,576 tokens.
Who makes DeepSeek V3.1 Terminus and DeepSeek V4 Flash 0731?
DeepSeek V3.1 Terminus is made by DeepSeek. DeepSeek V4 Flash 0731 is made by DeepSeek.
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