DeepSeek: DeepSeek V4 Flash 0731

Facts

price input

$0.06per million tokensopenrouter-models, last checked 2026-09-14

price output

$0.12per million tokensopenrouter-models, last checked 2026-09-14

context window

1310720tokensopenrouter-models, last checked 2026-09-14

intelligence index

34.5openrouter-models, last checked 2026-09-14

coding index

69.1openrouter-models, last checked 2026-09-14

status

activeopenrouter-models, last checked 2026-09-14

license

MIT License, repository and weightssource, accessed 2026-08-29

parameters

284B total, 13B active per token (sparse mixture of experts)source, accessed 2026-08-29

repository tensor total

304B paramssource, accessed 2026-08-29

preview parameters

284 billion parameterssource, accessed 2026-08-29

structure

the same model structure as DeepSeek-V4-Flash-DSpark, i.e. it comes with a speculative decoding module attachedsource, accessed 2026-08-29

terminal bench score

82.7 on Terminal Bench (2.1), per the model cardsource, accessed 2026-08-29

cybergym score

76.7 on CyberGym, per the model cardsource, accessed 2026-08-29

preview terminal bench score

61.8 on Terminal Bench (2.1) — the April preview checkpoint's score, per the same table on the July model cardsource, accessed 2026-08-29

preview cybergym score

38.7 on CyberGym — the April preview checkpoint's score, per the same table on the July model cardsource, accessed 2026-08-29

release date

2026-07-31source, accessed 2026-08-29