Qwen 3.5 Plus (hosted 397B-A17B)
Qwen 3.5 Plus (hosted 397B-A17B) (Alibaba) was released on Feb 16, 2026. In the Epoch AI capability ranking (ECI), it ranks #79 out of 267 models, with 146.32.
Where Qwen 3.5 Plus (hosted 397B-A17B) stands out and where it falls behind, by the numbers
Qwen 3.5 Plus (hosted 397B-A17B) has published results on 14 tests compiled by Epoch AI. The yardstick here is its generation: its position among the models released between May 22, 2025 and May 17, 2026 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.
It is not in the top third of its generation on any test with 6 or more models compared.
Where it falls behind
Tests where it sits in the bottom half of its own generation.
See all 14 tests, one by one
| Test | Score | In its generation | Overall | Test record |
|---|---|---|---|---|
| GPQA Diamond | 84.8% | #29 / 61 (tied with 1) | #68 / 173 | 96.4% Gemini 4 Argon |
| AIME 2024 and 2025 (OTIS) | 86.7% | #27 / 61 (tied with 3) | #66 / 168 | 100.0% GPT-5.5 |
| Dtbench | 80.5% | #32 / 57 (tied with 1) | #68 / 148 | 98.9% Claude Opus 5.5 |
| Lmca | 36.36 | #26 / 54 | #62 / 121 | 68.23 Claude Opus 5.5 |
| ALE-Bench | 622 | #36 / 46 | #69 / 82 | 2,951 GPT-6 Astra |
| WebDev Arena | 1,399 | #20 / 42 | #60 / 82 | 1,820 Claude Opus 5.5 |
| SimpleQA Verified | 25.4% | #26 / 33 | #65 / 81 | 76.0% Gemini 4 Argon |
| Chess puzzles | 8.0% | #30 / 31 (tied with 1) | #73 / 80 | 76.0% GPT-6 Astra |
| Game puzzles | 17.0% | #17 / 30 (tied with 2) | #51 / 77 | 84.0% GPT-6 Astra |
| FrontierMath | 21.0% | #25 / 41 | #28 / 65 | 51.7% GPT-5.5 |
| Vending Bench 2 | 0.54 | #28 / 32 | #53 / 57 | 15,515 GPT-6 Astra |
| FrontierMath tier 4 | 2.1% | #30 / 40 (tied with 3) | #34 / 48 | 39.6% GPT-5.5 Pro |
| Cl Bench | 19.8% | #8 / 18 | #8 / 19 | 27.9% GPT-5.4 |
| Cl Bench Life | 12.4% | #8 / 13 | #8 / 13 | 22.2% GPT-5.5 |
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.
What to compare Qwen 3.5 Plus (hosted 397B-A17B) with
The models from other labs closest in capability and released in the same period, at most two per lab. Click any of them to see its page.
| Model | Lab | ECI | ELO | LiveBench | Release |
|---|---|---|---|---|---|
| MiniMax-M2.5 | MiniMax | 146.67 | 1,393 | n/a | Feb 12, 2026 |
| Grok 4 | xAI | 146.43 | n/a | n/a | Jul 9, 2025 |
| Qwen 3.5 Plus (hosted 397B-A17B) | Alibaba | 146.32 | n/a | n/a | Feb 16, 2026 |
| DeepSeek v4 (unknown) | DeepSeek | 146.26 | n/a | n/a | Apr 24, 2026 |
| GPT-5.4 Nano | OpenAI | 146.12 | 1,404 | 69.6 | Mar 17, 2026 |
| DeepSeek-V3.2 | DeepSeek | 146.11 | 1,455 | n/a | Dec 1, 2025 |
| Kimi K2 Thinking | Moonshot | 145.96 | n/a | n/a | Nov 6, 2025 |
Qwen 3.5 Plus (hosted 397B-A17B) or GPT-5.4 Nano?
GPT-5.4 Nano is the model from another lab closest to Qwen 3.5 Plus (hosted 397B-A17B) in capability. Across the 10 tests both took, this is the score:
| Test | Qwen 3.5 Plus (hosted 397B-A17B) | GPT-5.4 Nano |
|---|---|---|
| Chess puzzles | 8.0% | 45.0% |
| FrontierMath tier 4 | 2.1% | 6.3% |
| SimpleQA Verified | 25.4% | 11.7% |
| Game puzzles | 17.0% | 9.0% |
| ALE-Bench | 622 | 1,005 |
| FrontierMath | 21.0% | 25.9% |
| GPQA Diamond | 84.8% | 78.5% |
| Lmca | 36.36 | 36.86 |
| AIME 2024 and 2025 (OTIS) | 86.7% | 87.8% |
| Dtbench | 80.5% | 80.3% |
Unweighted score: each test counts one point, whether math or coding. The dot marks who did better on each row.
Other models from Alibaba
The models from the same lab closest in time, newest first.
| Model | Release | ECI | ELO | LiveBench | Access |
|---|---|---|---|---|---|
| Qwen 3.6 Max (Preview) | Apr 20, 2026 | 149.24 | 1,488 | n/a | Unknown |
| Qwen 3.6 35B-A3B | Apr 14, 2026 | 144.11 | n/a | n/a | Open weights (unrestricted) |
| Qwen 3.6 Plus | Mar 31, 2026 | 147.49 | 1,476 | 68.9 | API access |
| Qwen 3.5 Flash (hosted 35B-A3B) | Feb 25, 2026 | 143.77 | 1,446 | n/a | Unknown |
| Qwen3.5-122B-A10B | Feb 24, 2026 | 146.26 | 1,466 | n/a | Open weights (restricted use) |
| Qwen3.5-35B-A3B | Feb 24, 2026 | 142.48 | 1,457 | n/a | Open weights (unrestricted) |
| Qwen3.5-9B | Feb 24, 2026 | 139.43 | n/a | n/a | Open weights (restricted use) |
| Qwen 3.5 Plus (hosted 397B-A17B) | Feb 16, 2026 | 146.32 | n/a | n/a | Unknown |
| Qwen3.5 397B-A17B | Feb 13, 2026 | 146.66 | 1,499 | n/a | Open weights (unrestricted) |
Have you used Qwen 3.5 Plus (hosted 397B-A17B)? Rate it
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What people ask about Qwen 3.5 Plus (hosted 397B-A17B)
Where does Qwen 3.5 Plus (hosted 397B-A17B) rank among AI models?
In the ROO3 AI Benchmark, ordered by the Epoch AI ECI, Qwen 3.5 Plus (hosted 397B-A17B) ranks #79 out of 267 models, with an ECI of 146.32. The ECI is a composite index that combines several hard benchmarks into a single scale. The position changes when a new model comes out, and the page is refreshed six times a day.
Is Qwen 3.5 Plus (hosted 397B-A17B) better than GPT-5.4 Nano?
Across the 10 tests both models took and Epoch AI compiled, Qwen 3.5 Plus (hosted 397B-A17B) comes out ahead on 4, behind on 6 and tied on 0. It is a test-by-test count with no weighting: a win in math counts the same as a win in coding. To choose between the two, look at the tests that resemble your own use.
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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