DeepSeek·deepseek/deepseek-v4.1-flash
DeepSeek V4.1 Flash is ModelCap current-board rank #40 with Index 65.2 (Modeled · succession), from the ModelCap Index as of 10 Sept 2026, 11:40 UTC.
DeepSeek V4.1 Flash listed OpenRouter input price is $0.15 per 1M tokens and listed output price is $0.60 per 1M tokens, from OpenRouter listed prices as of 10 Sept 2026, 11:40 UTC.
DeepSeek V4.1 Flash has a published context limit of 1M tokens in the ModelCap catalogue as of 10 Sept 2026, 11:40 UTC.
DeepSeek V4.1 Flash has 3 published OpenRouter serving endpoints, from OpenRouter as of 10 Sept 2026, 11:40 UTC.
DeepSeek V4.1 Flash weight access is open weights, from ModelCap classification of published repository metadata as of 10 Sept 2026, 11:40 UTC.
Snapshot facts · download the public dataset · methodology
Provider economics and telemetry published by the Hugging Face Router. These are operational signals, not benchmark results.
No general-family board lists this model yet. Its point estimate is the precision-weighted mean of every channel that spoke for it; each channel’s share is the weight it carried. Independent measurements replace this placement as boards list the model.
BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.
These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.
The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.
Experimental estimate. This layer predicts from admitted evidence and safe metadata only. It never enters ModelCap Score or rank.
Missing: artifactReproducibility.base-lineage, evaluationProvenance.admitted-evaluation-observations, evaluationProvenance.capability-family-breadth, evaluationProvenance.evaluation-source-diversity, evaluationProvenance.identity-and-source-confidence, evaluationProvenance.evaluation-dataset-revisions.
A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.
Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.
This model is visible because it is available in the live catalogue, but it has no trustworthy community result yet. ModelCap does not infer a quality score from price, features, or market activity.
OpenRouter weekly popularity across the full model catalogue.
Independent providers versus the model's open or closed cohort, weighted by uptime.
Hugging Face 30-day downloads for open models; neutral for closed models.
Time since first public availability, on a six-month half-life.
Open weights. Downloadable weights are published under an OSI or free-culture license in the current repository metadata. This describes weight availability, not whether the full training stack qualifies as Open Source AI.
Models within 3 places of #40 on the ModelCap Index.
Index score within 3 points of, or above, this model's, with a lower listed blended price (3:1 input:output).
The same publisher's other current models with a public Index position.
DeepSeek V4.1 Flash holds ModelCap Index position #40 of 172 ranked language models as of 10 September 2026, with an Index score of 65.2 (interval 51.6–78.8); evidence: modeled · succession. The Index combines public benchmark boards with published uncertainty; the methodology page explains the weighting.
DeepSeek V4.1 Flash is listed at $0.15 per 1M input tokens and $0.60 per 1M output tokens as of 10 September 2026 across 3 providers. Prices come from the OpenRouter catalogue and re-observe on every refresh. For 1,000 requests using 2,000 input and 500 output tokens each, the listed rates imply $0.60 total (2M input + 0.5M output). This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the chosen endpoint's rate and limits before budgeting.
DeepSeek V4.1 Flash has a published context window of 1M tokens (1,048,576) and a maximum output of 384K tokens. Individual providers can serve less than the published maximum; the providers table lists each endpoint's own limit.
Open weights (mit). Downloadable weights are published under an OSI or free-culture license in the current repository metadata. This describes weight availability, not whether the full training stack qualifies as Open Source AI. The repository is deepseek-ai/DeepSeek-V4.1-Flash on Hugging Face.
3 providers serve DeepSeek V4.1 Flash through OpenRouter as of 10 September 2026: DeepSeek, Novita and DeepInfra. Each provider's price, context limit, quantization and measured uptime are in the providers table above.
DeepSeek V4.1 Flash's Index position rests on the evidence listed on this page; it has no result on the public boards ModelCap tracks as separate leaderboards as of 10 September 2026. The evidence panel names each source and its publication date.
DeepSeek V4.1 Flash ranks #40 (Index 65.2) and Gemma 4 26B A4B ranks #39 (Index 65.2) on the ModelCap Index as of 10 September 2026. The head-to-head page lines up their benchmarks, listed prices, context windows and provider counts side by side.
DeepSeek V4.1 Flash first appeared in the catalogue on 10 Sept 2026. It is the current version in its family. Rank and price movements since then are recorded on the site's changes feed.