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Qwen 3.8 Max vs Claude Opus 5
Claude Opus 5 scores higher than Qwen 3.8 Max on all 6 public leaderboards that rate both. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Qwen 3.8 Max is at 50.2 and Claude Opus 5 at 82.7 (out of 100).
Scores as published by each board; table composed September 24, 2026.
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Leaderboard by leaderboard
| Board | Qwen 3.8 Max | Claude Opus 5 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,671.2 | 1,692.4 | Claude Opus 5 |
| LiveBench global average (0-100) | 78.5 | 80.1 | Claude Opus 5 |
| SimpleBench AVG@5 % (private set) | 62.5 | 80.6 | Claude Opus 5 |
| LLM Stats LLM Stats Score · composite (0-100), their rendered top 15 | 51.5 | 54.8 | Claude Opus 5 |
| Vals AI Vals Index accuracy % · weighted finance + coding tasks | 51.8 | 67.2 | Claude Opus 5 |
| Artificial Analysis intelligence index · measured runs only | 45.4 | 50.8 | Claude Opus 5 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
Qwen 3.8 Max at a glance
- Developer
- Alibaba
- Status
- Live since August 1, 2026
Live - flagship since Aug 1 · 2.4T tier listed Aug 12.
Qwen3.8-Max quietly lost its preview label — Alibaba is now serving it as the flagship
2026-08-03 · Alibaba is serving Qwen3.8-Max on chat.qwen.ai under the plain id `qwen3.8-max`. The preview suffix is gone.
Claude Opus 5 at a glance
- Developer
- Anthropic
- Status
- Live since July 24, 2026
Live — detected 16:51 UTC Jul 24, alert fired 61s later · superseded by Opus 5.5 on Sep 22 and moved to Anthropic's legacy list; still served at $5/$25, which is now MORE than its successor.
Claude Opus 5 is live — we detected it at 16:51 UTC and had alerts out 61 seconds later
2026-07-24 · Anthropic's Claude Opus 5 went live on the public API today. Our checkers saw the id appear at 16:51:33 UTC, confirmed it on the next 60-second sweep, and the alert blast went out at 16:52:34 — sixty-one seconds from first sighting to inbox.
Qwen 3.8 Max vs Claude Opus 5: quick answers
Which is better, Qwen 3.8 Max or Claude Opus 5?
It depends on what you measure. Claude Opus 5 scores higher than Qwen 3.8 Max on all 6 public leaderboards that rate both. Claude Opus 5's widest lead is on LLM Stats. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Qwen 3.8 Max is at 50.2 and Claude Opus 5 at 82.7 (out of 100).
Which is newer, Qwen 3.8 Max or Claude Opus 5?
Qwen 3.8 Max. It went live on August 1, 2026, 8 days after Claude Opus 5 (July 24, 2026).
Who makes Qwen 3.8 Max and Claude Opus 5?
Qwen 3.8 Max is from Alibaba; Claude Opus 5 is from Anthropic.
Where do these numbers come from?
Each score is the leaderboard's own published figure, read by ArtificialWatch (table composed September 24, 2026). Boards measure different things, so raw scores are only comparable within a row.
More comparisons
Watch free: Chrome push the moment a new model answers on a public API, an email about 15 minutes later. Also: the bench index · the wire