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DeepSeek V4 Flash 0731 (free)

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DeepSeek V4 Flash 0731 (free) is a compact variant, chosen for high throughput and low cost rather than absolute capability. Available via DeepSeek. 1,048,576-token context. Free tier on OpenRouter. Routed through OpenRouter's free tier, where capacity is best-effort.

DeepSeek V4 Flash 0731 (free) is a efficient AI model from DeepSeek. It costs $0.000 per million input tokens and $0.000 per million output tokens (blended $0.000/M), with a 1,048,576-token context window.

Modalities textProvider pricing ↗API docs ↗Pricing source ↗Compare with another model →Estimate monthly cost →
INPUT
$0.000/M
per million input tokens
OUTPUT
$0.000/M
per million output tokens
BLENDED 70/30
$0.000/M
unchanged since 3 May
default reference rate · how it is calculated →
CONTEXT
1,048,576
tokens
What it is good at
  • Sub-second latency
  • Affordable at scale
  • Good for routing & classification
Typical use cases
  • Routing & classification
  • Bulk summarisation
  • Realtime chat UX

Benchmarks

No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.

More from DeepSeek

See all 11 →
DeepSeek-V4-Pro
Frontier · 1,000,000 ctx
in $1.740/Mout $3.480/M
DeepSeek-V4-Flash
Efficient · 1,000,000 ctx
in $0.140/Mout $0.280/M
DeepSeek-V3
Frontier · 64,000 ctx
in $0.270/Mout $1.100/M
DeepSeek-V3-0324
Frontier · 128,000 ctx
in $0.270/Mout $1.100/M
DeepSeek-R1
Reasoning · 64,000 ctx
in $0.550/Mout $2.190/M
DeepSeek-R1-0528
Reasoning · 64,000 ctx
in $0.550/Mout $2.190/M

Frequently asked questions

How much does DeepSeek V4 Flash 0731 (free) cost?

DeepSeek V4 Flash 0731 (free) costs $0.000 per million input tokens and $0.000 per million output tokens, for a blended reference rate of $0.000 per million tokens.

What is DeepSeek V4 Flash 0731 (free)'s context window?

DeepSeek V4 Flash 0731 (free) supports up to 1,048,576 tokens of context in a single request.

What is DeepSeek V4 Flash 0731 (free) best for?

DeepSeek V4 Flash 0731 (free) is well suited to Sub-second latency, Affordable at scale and Good for routing & classification.

Who makes DeepSeek V4 Flash 0731 (free)?

DeepSeek V4 Flash 0731 (free) is developed and served by DeepSeek.

Terms used on this page

Full glossary →
TokenInput tokensOutput tokensPrice per million tokensContext windowPrompt cachingBatch APIBlended cost