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DeepSeek V4.1 Flash (Max)

open weights★ featured
DeepSeek · released 2026-09-10 · 41 offers

Context 1M tokens

Top 5 cheapest providers (Adjusted $/task)

The same list price can give a different adjusted $/task (caching, token efficiency) — click a price for its inputs.

Within the active global provider, residency and confidentiality filters.

#ProviderAdjusted $/task
1Morphvia OpenRouter — Price via OpenRouter: OpenRouter's price for Morph's endpoint (https://openrouter.ai/deepseek/deepseek-v4.1-flash/providers), collected 2026-11-03.
2Relacevia OpenRouter — Price via OpenRouter: OpenRouter's price for Relace's endpoint (https://openrouter.ai/deepseek/deepseek-v4.1-flash/providers), collected 2026-11-03.
3OpenInferencevia OpenRouter — Price via OpenRouter: OpenRouter's price for OpenInference's endpoint (https://openrouter.ai/deepseek/deepseek-v4.1-flash/providers), collected 2026-11-03.
4Wafervia OpenRouter — Price via OpenRouter: OpenRouter's price for Wafer's endpoint (https://openrouter.ai/deepseek/deepseek-v4.1-flash/providers), collected 2026-11-03.
5Sail Researchvia OpenRouter — Price via OpenRouter: OpenRouter's price for Sail Research's endpoint (https://openrouter.ai/deepseek/deepseek-v4.1-flash/providers), collected 2026-11-03.

Composite

3 of 7 inputs · 2 from the model family6 radar axes: DesignArena's two boards share one

51.0

AA Coding v4.xCoding Agent v1.4AA Intelligence (est.)AA AgenticEpoch ECISoftware ECIDesignArenaAA Intelligence (est.): percentile 90Epoch ECI: percentile 59Software ECI: percentile 39

AA Coding v4.x —Coding Agent v1.4 —AA Intelligence (est.) 29.6AA Agentic —Epoch ECI 156.1Software ECI 151.9DesignArena —/—

Radar: percentile among all models measured on each input; a gap means not measured.

Benchmark sheet

44 of 319 registered benchmark versions · bars show the percentile among all models measured on each benchmark.

19 of 44 values are DeepSeek's own claims (†), not independent measurements; a matching independent result replaces a claim as soon as one exists.

Composite attachments (used in the score, not counted as exact benchmarks):
  • Epoch ECI · attached
  • Software ECI · attached
Compare this model →

Agentic

  • AA-Briefcase821,424 Elo

    AA-Briefcase published 2026-09-10 → · Published board — Tests multi-week professional knowledge-work projects with linked tasks and large source collections.

  • GDPval-AA v2951,632 Elo

    GDPval-AA v2 v2 → · Published board — Tests professional knowledge-work deliverables across occupations using AA's Stirrup harness.

  • Terminal-Bench v4.0 (AA)8626.8%

    Terminal-Bench v4.0 (AA) v4.0 → · Published board — Tests terminal-based work on the 66-task release using mini-SWE-agent v2.4.6.

  • Agent's Last Examdeveloper's claim31.8%† self-reported by the developer

    Agent's Last Exam published 2026-09-10 → · Official scaffold · Vendor-reported by DeepSeek — Agent's Last Exam result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • AutomationBenchdeveloper's claim54.8%† self-reported by the developer

    AutomationBench published 2026-09-10 → · Official scaffold · Vendor-reported by DeepSeek — AutomationBench result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • HLE w/ toolsdeveloper's claim63.9%† self-reported by the developer

    HLE w/ tools published 2026-09-10 → · Vendor-reported by DeepSeek — HLE w/ tools result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • Terminal-Bench 2.1developer's claim90.6%† self-reported by the developer

    Terminal-Bench 2.1 v2.1 → · DeepSeek Harness (Minimal) · Vendor-reported by DeepSeek — Terminal-Bench 2.1 result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • Terminal-Bench 3.0developer's claim30.0%† self-reported by the developer

    Terminal-Bench 3.0 v3.0 → · DeepSeek Harness (Minimal) · Vendor-reported by DeepSeek — Terminal-Bench 3.0 result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • Terminal-Bench 4.0developer's claim31.2%† self-reported by the developer

    Terminal-Bench 4.0 v4.0 → · DeepSeek Harness (Minimal) · Vendor-reported by DeepSeek — Terminal-Bench 4.0 result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • τ²-Bench Airline (OpenRouter run)8776.7%

    τ²-Bench Airline (OpenRouter run) published 2026-09-15 → · Published board — Multi-turn service agents making tool calls under strict policy constraints. (OpenRouter's own reproducible run, as published on openrouter.ai/benchmarks.)

  • LMArena Agent Arena (overall net improvement)424.1%

    LMArena Agent Arena (overall net improvement) published 2026-09-26 → · Published board — Ranking of models as the orchestrator in LMArena’s Agent Mode, scored by the causal net improvement over the average model across behavioural signals from real sessions.

Coding

  • Artificial Analysis Coding Agent Index v2.05647.3%

    Artificial Analysis Coding Agent Index v2.0 v2.0 → · Codex — Measures coding-agent systems on FrontierCode v1.1 Main, Terminal-Bench 4.0 and SWE-Atlas-QnA-AA.

  • SciCode (AA subproblems) v1.0.16551.9%

    SciCode (AA subproblems) v1.0.1 → · Published board — Tests scientific Python programming with scientist-annotated background information.

  • Codeforces (Rating)developer's claim3,471 Elo† self-reported by the developer

    Codeforces (Rating) published 2026-09-10 → · Vendor-reported by DeepSeek — Codeforces (Rating) result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • DeepSWE v1.1developer's claim74.2%† self-reported by the developer

    DeepSWE v1.1 v1.1 → · mini-SWE · Vendor-reported by DeepSeek — DeepSWE v1.1 result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • NL2Repo-Benchdeveloper's claim64.0† self-reported by the developer

    NL2Repo-Bench published 2026-09-10 → · DeepSeek Harness (Minimal) · Vendor-reported by DeepSeek — NL2Repo-Bench result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • ProgramBench (Almost@1)developer's claim20.3%† self-reported by the developer

    ProgramBench (Almost@1) published 2026-09-10 → · DeepSeek Harness (Minimal) · Vendor-reported by DeepSeek — ProgramBench (Almost@1) result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • LMArena WebDev (Code Arena, overall)361,621 Elo

    LMArena WebDev (Code Arena, overall) published 2026-09-26 → · Published board — Community pairwise-vote ranking of models on front-end web development tasks, including agentic multi-step coding, published by LMArena as a Bradley-Terry rating.

Efficiency

Knowledge

Long-context

  • GDP.pdf (AA)5712.8%

    GDP.pdf (AA) published 2026-09-10 → · Published board — Tests professional reasoning over long PDFs with AA document preparation and grading.

  • AA-LCR v1.19884.0%

    AA-LCR v1.1 v1.1 → · Published board — Tests reasoning across multiple long documents with corrected answer keys and grading.

Math

  • MathArena Apexdeveloper's claim65.6%† self-reported by the developer

    MathArena Apex published 2026-09-10 → · Vendor-reported by DeepSeek — MathArena Apex result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • ArXivMath 06/2026 (MathArena)1957.6%

    ArXivMath 06/2026 (MathArena) 2026-06 → · Published board — Research-level math problems with a checkable final answer, drawn from arXiv papers submitted in June 2026; each edition is restricted to papers published within the last month to reduce training-data contamination.

  • ArXivMath 08/2026 (MathArena)043.9%

    ArXivMath 08/2026 (MathArena) 2026-08 → · Published board — Research-level math problems with a checkable final answer, drawn from arXiv papers submitted in August 2026; each edition is restricted to papers published within the last month to reduce training-data contamination.

  • BrokenArXiv 06/2026 (MathArena)2039.4%

    BrokenArXiv 06/2026 (MathArena) 2026-06 → · Published board — Plausible but false proof statements taken from June 2026 arXiv papers; a model scores by refusing to prove them and saying the statement is false as written.

  • BrokenArXiv 08/2026 (MathArena)1354.8%

    BrokenArXiv 08/2026 (MathArena) 2026-08 → · Published board — Plausible but false statements taken from August 2026 arXiv papers; a model scores by refusing to prove them and saying the statement is false as written.

Reasoning

  • GPQA Diamonddeveloper's claim90.9%† self-reported by the developer

    GPQA Diamond published 2026-09-10 → · Vendor-reported by DeepSeek — GPQA Diamond result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • HLEdeveloper's claim36.8%† self-reported by the developer

    HLE published 2026-09-10 → · Vendor-reported by DeepSeek — HLE result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • LiveBench 2026-06-258381.1

    LiveBench 2026-06-25 → · Published board — A periodically refreshed suite of objectively graded tasks with separate category scores and an overall category mean.

Safety/Alignment

  • BullshitBench V1 (clear pushback)7241.8%

    BullshitBench V1 (clear pushback) published 2026-09-10 → · Published board — Whether a model rejects the broken premise of 55 deliberately nonsensical prompts (V1 question set) instead of answering them confidently.

  • BullshitBench V2 (clear pushback)7757.0%

    BullshitBench V2 (clear pushback) published 2026-09-10 → · Published board — Whether a model rejects the broken premise of 100 deliberately nonsensical prompts (V2 question set) instead of answering them confidently.

  • CyberGymdeveloper's claim88.1%† self-reported by the developer

    CyberGym published 2026-09-10 → · Vendor-reported by DeepSeek — CyberGym result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • ExploitGymdeveloper's claim15.3%† self-reported by the developer

    ExploitGym published 2026-09-10 → · Vendor-reported by DeepSeek — ExploitGym result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • SEC-Bench Prodeveloper's claim62.8%† self-reported by the developer

    SEC-Bench Pro published 2026-09-10 → · Claude Code · Vendor-reported by DeepSeek — SEC-Bench Pro result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

Science

  • CritPt (AA)8714.3%

    CritPt (AA) published 2026-09-10 → · Published board — Tests research-level physics reasoning with Python, symbolic and numerical answers.

  • GPQA Diamond (OpenRouter run)8990.2%

    GPQA Diamond (OpenRouter run) published 2026-09-15 → · Published board — Graduate-level science questions that resist retrieval and reward careful reasoning. (OpenRouter's own reproducible run, as published on openrouter.ai/benchmarks.)

Tool-use

  • AutomationBench-AA v1.0.69968.9%

    AutomationBench-AA v1.0.6 → · Published board — Tests multi-app SaaS workflows through REST tools on a held-out AutomationBench split.

Vision

  • MMMU Pro (AA)7577.0%

    MMMU Pro (AA) published 2026-09-10 → · Published board — Tests multimodal understanding using challenging ten-option questions.

  • BabyVision w/ toolsdeveloper's claim89.6%† self-reported by the developer

    BabyVision w/ tools published 2026-09-10 → · Claude Code · Vendor-reported by DeepSeek — BabyVision w/ tools result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • Chartography w/ toolsdeveloper's claim78.9%† self-reported by the developer

    Chartography w/ tools published 2026-09-10 → · Claude Code · Vendor-reported by DeepSeek — Chartography w/ tools result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

  • ZeroBench-main w/ toolsdeveloper's claim49.0%† self-reported by the developer

    ZeroBench-main w/ tools published 2026-09-10 → · Claude Code · Vendor-reported by DeepSeek — ZeroBench-main w/ tools result as reported by DeepSeek in the DeepSeek-V4.1-Flash model card; this registry identity preserves the printed version or the card's publication date when none was stated.

Missing coverage · 275 benchmark versions

No result does not mean a zero, or that the model was never tested. Collection failures and disputed versions retain their distinct status.

Variants / reasoning settings

Artificial Analysis snapshot 2026-11-03 · Intelligence Index v5.0 (est. = estimated from v4, not measured) · Coding Index v4.x frozen 2026-10-27 · Data: Artificial Analysis · Data: Epoch AI (CC BY)

VariantAA CodingAA Intelligence
DeepSeek V4.1 Flash (Max)—29.6est.
DeepSeek V4.1 Flash (Non-reasoning)—12.4est.
Token offers by platform · 35 offers (Adjusted $/task)

Click any underlined price to see how it is estimated and where each input comes from. How we calculate adjusted cost.

35 offers within the active global filters, 6 more outside them; “price n/a” means the provider serves the model but publishes no direct token price we could collect — no other channel's price is shown in its place.

OpenRouter (33)

Prices via OpenRouter — what OpenRouter charges for each provider's endpoint, not the provider's own direct price. Source: openrouter.ai/deepseek/deepseek-v4.1-flash/providers, collected 2026-11-03.

Morph
Relace
Wafer
Sail Research
Sail Research
Decart
InferenceNet
InferenceNet
DeepInfra
CoreWeave
Reka
Wafer
Novita
PrimeIntellect
Fireworks
Phala
DigitalOcean
Makora
Relace
Crusoe
Together
SiliconFlow
Parasail
Fireworks
BaseTen
BaseTen
Venice
Nebius
Mancer 2
Google
Modal
Fireworks
OpenInference

TensorX (1)

Direct prices from TensorX's own price list. Source: tensorx.ai/pricing/, collected 2026-11-03.

TensorX

Nebius (1)

Direct prices from Nebius's own price list. Source: tokenfactory.nebius.com/models, collected 2026-11-03.

Nebius
DeepSeek V4.1 Flash (Max) — benchmarks & cost