DeepSeek · DeepSeek Flash line · lightweight · open weights
DeepSeek-V4-Flash-Preview was released by DeepSeek on April 24, 2026, as an open-weights lightweight model in the DeepSeek Flash line.
The smaller of the two V4 preview models, with 284B total and 13B active parameters, a 1M-token context window and MIT-licensed open weights, priced at $0.14 per million input tokens and $0.28 per million output tokens.
Solves about 8 in 10 real-world coding tasks
SWE-bench Verified — fixing real bugs in real software projects
79.0%
✦ first model in this line · DeepSeek's own test at max reasoning effort
Scores 24 on the all-round intelligence index
Artificial Analysis Intelligence Index v4.3.2 — one score averaging 10 hard tests
24
✦ first model in this line — nothing earlier to compare
Costs developers 14 cents per million input tokens
Price per 1M tokens — what developers pay, input / output
$0.14 / $0.28
✦ launch price — nothing earlier to compare
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DeepSeek-V4.1-Flash is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
Newest first. See the full line with every card →