DeepSeek 4.1 Flash
A lightweight large language model released by DeepSeek. It employs a CSA2 architecture to achieve highly compressed KV caching, supports native visual understanding, and is characterized by high-speed inference and low-cost deployment.
Core Facts
Timeline (last 90 days)
The OpenCode platform doubled the quota for GLM 5.3 Flash, integrated DeepSeek 4.1 Flash, and then offered 4× usage for the following 72 hours.
DeepSeek officially stated that 4.1 Flash adopts a new architectural design, making inference faster and more efficient.
MiMo v2.6 can drive Blender to generate 3D assets and animate them with code, but its spatial reasoning is not strong, and in some scenarios for procedurally generating 3D scenes with three.js it underperforms DeepSeek 4.1 Flash.
In the reviewer's standard test leaderboard, MiMo-V2.6 Flash ranked third, one point higher than DeepSeek 4.1 Flash.
DeepSeek 4.1 Flash consumes a large number of tokens, and the cost advantage brought by its small KV cache is partially offset by the high token consumption.
DeepSeek 4.1 Flash adopts an encoder-decoder architecture, where the encoder creates a shared global memory and the decoder reads information from it.
DeepSeek 4.1 Flash can surpass top-tier models such as Claude Opus 5 and Kimi K3 on certain benchmarks, but does not lead across the board.
In an experiment reproducing a physics-related paper, GPT-6 Astra performed best, Opus 5.4 was slightly behind, and DeepSeek has room for improvement on tasks such as rendering.
Volcano Ark's Agent Plan has listed DeepSeek 4.1 Flash, with credits calculated at a 50% discount during the September 15–28 event
Key details of DeepSeek-V4.1-Flash such as specific model parameters, benchmark data, release method, and pricing have not yet been fully disclosed.
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All Facts (6)
DeepSeek has released an experimental multimodal model, DeepSeek V4 Flash Vision EXP, which performs excellently in both text and multimodal tasks.
90%UnverifiedDeepSeek officially stated that 4.1 Flash adopts a new architectural design, making inference faster and more efficient.
50%UnverifiedMiMo v2.6 can drive Blender to generate 3D assets and animate them with code, but its spatial reasoning is not strong, and in some scenarios for procedurally generating 3D scenes with three.js it underperforms DeepSeek 4.1 Flash.
50%UnverifiedDeepSeek 4.1 Flash adopts an encoder-decoder architecture, where the encoder creates a shared global memory and the decoder reads information from it.
50%UnverifiedDeepSeek 4.1 Flash consumes a large number of tokens, and the cost advantage brought by its small KV cache is partially offset by the high token consumption.
50%UnverifiedThe OpenCode platform doubled the quota for GLM 5.3 Flash, integrated DeepSeek 4.1 Flash, and then offered 4× usage for the following 72 hours.
50%