WhichAI / Models / DeepSeek V4.1 Flash

DeepSeek V4.1 Flash

· verified October 3, 2026

public paid api open-weights reasoning vision long-context value local

Provider

Statuspublic

AA Intelligence Index39.5 (official, read October 3, 2026)

Released2026-09-10

Context window1.05M

ModalitiesText + image

API price $/1M (in / out)$0.3 / $1.2 (OpenRouter)

Speedn/a

AccessAPI $0.3/$1.2 per 1M tokens on OpenRouter · open weights · listed September 10, 2026

In one line

DeepSeek V4.1 Flash by DeepSeek, measured by Artificial Analysis at 39.5 on the Intelligence Index. Added to WhichAI automatically from live data on October 3, 2026: no editorial review yet, so judge it by the numbers, not by a verdict. OpenRouter's description: “DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture.”

Alternatives worth a look

Muse Spark 1.2 (Meta) · AA 39.6API via Meta Superintelligence Labs (August 6, 2026 refresh of the 1.1 line)
Gemini 3.7 Flash (Google) · AA 39.1Released August 13, 2026 · API $0.75/$3.75 per 1M tokens (introductory, doubles Jan 1, 2027) · model id gemini-3.7-flash · free-tier availability not confirmed
Qwen3.8 2.4T A95B (Alibaba) · AA 39.9API $2/$6 per 1M tokens on OpenRouter · open weights · listed August 12, 2026

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Artificial Analysis Intelligence Index, official scale (the number published on artificialanalysis.ai), relayed by OpenRouter and refreshed automatically: last read October 3, 2026. 97 models carry a current official measurement. A value marked ~ is converted from an earlier snapshot because no current measurement is published; an unmeasured model is never ranked. Context, price, modality and listing dates come from the public OpenRouter model list (refreshed automatically on the live site; static copy retrieved October 3, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (Model guide and About > Methodology).