DeepSeek V4.1 Flash 1017
DeepSeek V4.1 Flash 1017 (DeepSeek) was released on Oct 17, 2026. It has no ECI yet: the Epoch AI composite index comes out in a later round after launch, and until then the model holds no position in the ranking. Against models of the same generation, its best result is on AIME 2024 and 2025 (OTIS): 99.4%, #14 of 76, tied with 1 others.
Where DeepSeek V4.1 Flash 1017 stands out and where it falls behind, by the numbers
DeepSeek V4.1 Flash 1017 has published results on 7 tests compiled by Epoch AI. The yardstick here is its generation: its position among the models released between Jan 20, 2026 and Jan 15, 2027 that took the same test. Against the whole archive, which includes 2023 models, a recent release lands near the top of almost everything, and that says nothing.
Where it stands out
Tests where it sits in the top third of its own generation.
Where it falls behind
Tests where it sits in the bottom half of its own generation.
See all 7 tests, one by one
| Test | Score | In its generation | Overall | Test record |
|---|---|---|---|---|
| GPQA Diamond | 93.2% | #19 / 74 | #19 / 166 | 96.4% Gemini 4 Argon |
| AIME 2024 and 2025 (OTIS) | 99.4% | #14 / 76 (tied with 1) | #14 / 161 | 100.0% GPT-5.5 |
| Frontiermath Tiers 1 3 V2 | 71.2% | #25 / 65 | #26 / 87 | 93.7% GPT-6 Astra |
| SimpleQA Verified | 42.5% | #37 / 60 | #43 / 82 | 76.0% Gemini 4 Argon |
| Chess puzzles | 46.0% | #21 / 60 (tied with 2) | #24 / 82 | 76.0% GPT-6 Astra |
| Game puzzles | 49.0% | #13 / 59 | #13 / 78 | 84.0% GPT-6 Astra |
| Frontiermath Tier 4 V2 | 46.3% | #20 / 55 (tied with 3) | #20 / 68 | 100.0% GPT-6.1 Sol |
For each test, the model's best effort level counts, as in the ranking. Source of the scores: Epoch AI, under CC BY 4.0.
Other models from DeepSeek
The models from the same lab closest in time, newest first.
| Model | Release | ECI | ELO | LiveBench | Access |
|---|---|---|---|---|---|
| DeepSeek V4.1 Flash 1017 | Oct 17, 2026 | no ECI | n/a | n/a | Open weights (unrestricted) |
| DeepSeek V4.1 Flash | Sep 9, 2026 | 155.93 | 1,502 | 81.1 | Open weights (unrestricted) |
| DeepSeek V4 Pro 0813 | Aug 13, 2026 | 155.64 | n/a | 77.4 | Open weights (unrestricted) |
| DeepSeek V4 Flash 0731 | Jul 31, 2026 | 154.76 | n/a | 74.2 | Open weights (unrestricted) |
| DeepSeek-V4-Pro | Apr 24, 2026 | 149.13 | 1,486 | 71.6 | Open weights (unrestricted) |
| DeepSeek v4 (unknown) | Apr 24, 2026 | 146.26 | n/a | n/a | Open weights (unrestricted) |
| DeepSeek-V4-Flash | Apr 24, 2026 | 146.11 | 1,468 | 65.5 | Open weights (unrestricted) |
| DeepSeek-V3.2 | Dec 1, 2025 | 146.09 | 1,455 | n/a | Open weights (unrestricted) |
| DeepSeek-V3.2-Exp | Sep 29, 2025 | 144.91 | 1,461 | n/a | Open weights (unrestricted) |
Have you used DeepSeek V4.1 Flash 1017? Rate it
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What people ask about DeepSeek V4.1 Flash 1017
What is DeepSeek V4.1 Flash 1017 best at?
Against models of the same generation (released up to 9 months before and up to 3 months after it), the best relative results of DeepSeek V4.1 Flash 1017 are: AIME 2024 and 2025 (OTIS) (#14 of 76); Game puzzles (#13 of 59); GPQA Diamond (#19 of 74). The yardstick is its position among the models of that period that took the same test.
Where do the numbers on this page come from?
From the same three sources as the ranking, all openly licensed: Epoch AI (ECI and individual tests, CC BY 4.0), Arena (human-preference ELO, CC BY 4.0) and LiveBench (overall average, CC BY-SA 4.0). ROO3 does not measure any model. When the page shows a figure published by the maker itself, it appears in the written analysis, labeled as the maker's, and never enters the ranking.
Where each number comes from
Epoch AI, "AI Benchmarking Hub". Published at epoch.ai. Data under the CC BY 4.0 licence, reordered by roo3.co.
The Arena (LMArena) leaderboard, from the public lmarena-ai/leaderboard-dataset on Hugging Face, under the CC BY 4.0 licence. We are not affiliated with the Arena.
LiveBench, by the LiveBench team, published at livebench.ai under the CC BY-SA 4.0 license. The overall average is recomputed by roo3.co with the same formula as the website (average of the categories), and those numbers stay under CC BY-SA 4.0. We are not affiliated with LiveBench.
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