MODEL REFERENCE / DEEPSEEK

DeepSeek V4.1 Flash
verified model reference.

DeepSeek efficiency-focused multimodal reasoning model for high-throughput agentic, coding, and general API workloads.

1,048,576context tokens

393,216max output

2026-10-06last verified

PRIMARY-SOURCE VERIFIED

DeepSeek V4.1 Flash at a glance.

DeepSeek documents a 1,048,576-token context window. Input modalities: text + image. Output: text. Pricing status: Official paid API.

MODEL IDdeepseek-flash

CONTEXT WINDOW1,048,576tokens

MAX OUTPUT393,216

KNOWLEDGE CUTOFFNot published

STANDARD INPUTNot publishedofficial-paid

STANDARD OUTPUTNot publishedofficial-paid

CAPABILITY CONTRACT

Published model behavior.

REASONING

none · low · high · max · default high

Only provider-documented reasoning controls are shown; missing controls remain unpublished rather than inferred.

INPUT

text + image

Input modalities come from the cited official model documentation.

OUTPUT

text

Output modality and output-limit claims remain separate so an undocumented token cap is not guessed.

PRICING STATUS

Official paid API.

Only provider-published Standard paid token rates enter the SXF calculator. Partner hosting prices, negotiated rates and self-hosting costs are not substituted for a missing provider rate.

CAVEATS

What the source record does not assume.

DeepSeek publishes time-variable peak and off-peak USD token rates rather than one fixed Standard rate.

Peak hours are 01:00–04:00 and 06:00–10:00 UTC, Monday through Friday, excluding Chinese public holidays; all other times are off-peak.

The model is excluded from the SXF fixed-rate calculator until time-variable pricing is represented explicitly in calculator UX.

Knowledge cutoff remains unknown because the cited official documentation does not publish a verified cutoff.

EXPLORE

Keep the model in context.

OFFICIAL SOURCES

Verification links.

api-docs.deepseek.com/quick_start/pricing/↗api-docs.deepseek.com/api/list-models/↗api-docs.deepseek.com/guides/thinking_mode/↗api-docs.deepseek.com/updates/↗

WHAT CHANGED

DeepSeek V4.1 Flash: what changed.

No post-baseline factual changes recorded for DeepSeek V4.1 Flash since 2026-10-06.

VERIFIED BASELINE2026-10-06Current facts remain aligned with the SXF ledger.

VERIFIED CHANGE HISTORY

DeepSeek V4.1 Flash verified history.

Open ledger JSON ↗

BASELINE2026-10-06