DeepSeek10 Sep 2026Model

DeepSeek-V4.1-Flash

Made by: DeepSeek
Released: 10 Sep 2026
Announced in: DeepSeek-V4.1-Flash: Smarter, Faster, More Efficientapi-docs.deepseek.com
Event: DeepSeek-V4.1-Flash
API record: /api/v1/models/deepseek-v4-1-flash

Benchmark results

Benchmark	Score	Source check
Humanity's Last ExamNo tools · full set	36.8%	Corroborated The same number is printed in 3 other lab documents: 1 2 3
text-only subset	39.1%	Corroborated The same number is printed in 2 other lab documents: 1 2
Humanity's Last ExamWith tools	63.9%	Corroborated The same number is printed in 2 other lab documents: 1 2
GPQA Diamond	90.9%	Corroborated The same number is printed in 2 other lab documents: 1 2
Terminal-Bench 4.0	31.2%	Checked A person checked this number against its source on 17 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced. Corroborated The same number is printed in 1 other lab document: 1
AutomationBenchset not stated	54.8%	Corroborated The same number is printed in 2 other lab documents: 1 2
DeepSWE v1.1	74.2%	Checked A person checked this number against its source on 17 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced. Corroborated The same number is printed in 1 other lab document: 1
Terminal-Bench 2.1	90.6%	Checked A person checked this number against its source on 18 Oct 2026. This confirms the number matches what the lab published, not that the score was reproduced.

Sources

Reported by DeepSeek