The Model Index
Models/DeepSeek

DeepSeek-V4-Flash (Apr 2026)

DeepSeekReleased 24 Apr 2026Open
145132–158Index score#69 · provisional, limited data
0/ 8Core tests taken0 of 6 areas · plus 4 anchor tests
−32Versus the frontier at releasebest then: GPT-5.5Replaced by DeepSeek-V4-Flash
$0.042/ $0.084Price per million tokensinput / output, list price
1.05MContext windowtokens it reads at once

Where it sitson the frontier

o3 reached this score 12 months earlier.

Test resultsby area · tick = best by any model

Reasoning & knowledgeevidence
GPQA Diamond
no result
Humanity's Last Exam
no result
Mathsno evidence yet
FrontierMath T1-3
no result
Codingevidence
SWE-bench Verified
no result
Terminal-Bench
no result
Agentsevidence
APEX-Agents
no result
Novel problemsno evidence yet
ARC-AGI-2
no result
Long tasksno evidence yet
METR time horizon
no result

Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.

What others sayrank on each leaderboard

Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.

Best attop three among current models

Replaced by DeepSeek-V4-Flash; it no longer leads any category among current models.

Where this model places in the top three of today's models, on category leaderboards and on our core tests.

Where to use itprices checked 1 Oct 2026

Provider prices come from OpenRouter's live listing; going direct to a provider can differ. Subscriptions are the lab's own apps.

Facts and sources

Released24 Apr 2026
Announcementnot linked yet
Release entryDeepSeek-V4 preview (V4-Pro/V4-Flash)
Scored asDeepSeek-V4-Flash
Artificial Analysis index–
Output speed–

DeepSeek releasesaround this one