Compare AI models

Specifications
Parameters
—2.4T
Context window
—1M
API pricing
Cheapest input
$0.0356Relace$2.00Alibaba
Cheapest output
$0.18Decart$6.00Alibaba
Benchmarks
BullshitBench v2
57%95%
DeepSWE 1.1
74.2%56.6%
NL2Repo-Bench
65.4%55.9%
Terminal-Bench 3.0
30%11.3%
Terminal-Bench 2.1
90.6%86.6%
Humanity's Last Exam · with tools
63.9%43.6%
Overview
CompanyDeepSeekQwen
Release dateSep 10 2026Aug 3 2026
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

DeepSeek-V4.1-Flash leads Qwen3.8-Max on 5 of the 6 benchmarks they both report. Qwen3.8-Max shipped 38 days before DeepSeek-V4.1-Flash, so benchmark comparisons should account for the intervening progress.

DeepSeek-V4.1-Flash is open weight, while Qwen3.8-Max is closed.

On BullshitBench v2, Qwen3.8-Max leads at 95% vs DeepSeek-V4.1-Flash at 57%. On DeepSWE 1.1, DeepSeek-V4.1-Flash leads at 74.2% vs Qwen3.8-Max at 56.6%. On NL2Repo-Bench, DeepSeek-V4.1-Flash leads at 65.4% vs Qwen3.8-Max at 55.9%. On Terminal-Bench 3.0, DeepSeek-V4.1-Flash leads at 30% vs Qwen3.8-Max at 11.3%. On Terminal-Bench 2.1, DeepSeek-V4.1-Flash leads at 90.6% vs Qwen3.8-Max at 86.6%. On Humanity's Last Exam · with tools, DeepSeek-V4.1-Flash leads at 63.9% vs Qwen3.8-Max at 43.6%.