DeepSeek V4.1 Flash hands-on tests and comparisons

DeepSeek released DeepInfer under Apache 2.0 with distributed cross-chip compute and speculative decoding, first accelerating V4.1 Flash on SM100 GPUs with native Ascend 950 support.

Qwen3.8-27B and DeepSeek-V4.1-Flash powered local AI agent experiments across seven hardware configurations from a 16GB GPU to 512GB of memory, tasked with building entire worlds explorable in the browser.

A video pits DeepSeek V4.1 Flash 1017 against MiniMax M3.1 Flash and MiMo V2.6 Flash, though the post itself gives no results or numbers.

DeepSeek released DeepInfer, its in-house serving framework that currently runs V4.1 Flash, alongside the model; it targets high throughput and low latency to cut community compute costs and could push token prices lower.

A user runs the 763B DeepSeek V4.1 Flash 1017 on a single RTX 3090 24GB plus 64GB DDR4, getting 8 tok/s decode and 6 tok/s prefill — poor performance, but remarkable that a 3090 can run it at all.

A quantization size comparison notes Unsloth's Q4_K_XL build of V4.1 Flash 1017 takes 500.7GB versus 111.3GB for the Qwen model.

The author compares X hype around DeepSeek-V4.1-Flash-1017 with its pricing page and benchmark charts, flagging mismatches in cost claims and benchmark selection.

The author argues DeepSeek's strong, cheap, no-strings V4.1 line starves domestic rivals like K3 of revenue, ties DeepInfer to its own models, and raises the value of owned compute.

A user reports DeepSeek V4.1 Flash 1017 hitting 675.9 tok/s at concurrency 1, calling the speed beyond imagination and promising to share recipes.

From a 16GB RTX 5060 Ti to four DGX Sparks at 512GB with TP4, local agents built playable browser worlds using TensorFold, oMLX and other inference recipes, with DeepSeek V4.1 Flash in three of the seven setups.

Same prompt to build a 3D medieval castle in a single HTML file at max effort: DeepSeek took 48 minutes at $0 on the free tier, while Sonnet 5.5 via Claude Code took 15 minutes for $1.2.

A Japanese user recommends the 32GB R9700 at 330,000 yen for running the upcoming DSV4.1 Flash 1017 Strata locally, noting the XFX model has risen to 400,000 yen.