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Qwen 3.8 Max vs DeepSeek V4 Pro
Of the 6 public leaderboards that rate both, Qwen 3.8 Max scores higher on 5 and DeepSeek V4 Pro on 1. 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 DeepSeek V4 Pro at 37.1 (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 | DeepSeek V4 Pro | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,671.2 | 1,580.5 | Qwen 3.8 Max |
| LiveBench global average (0-100) | 78.5 | 77.4 | Qwen 3.8 Max |
| SimpleBench AVG@5 % (private set) | 62.5 | 50.9 | Qwen 3.8 Max |
| LLM Stats LLM Stats Score · composite (0-100), their rendered top 15 | 51.5 | 51.1 | Qwen 3.8 Max |
| Vals AI Vals Index accuracy % · weighted finance + coding tasks | 51.8 | 52.4 | DeepSeek V4 Pro |
| Artificial Analysis intelligence index · measured runs only | 45.4 | 36 | Qwen 3.8 Max |
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.
DeepSeek V4 Pro at a glance
- Developer
- DeepSeek
- Status
- Live since April 24, 2026
Live · open weights · superseded by V4.1 Flash — per DeepSeek's own changelog rather than our own reading, deepseek-v4-flash routes to V4.1 Flash; the matching deepseek-v4-pro cutover set for 04:00 UTC Sep 14 was reversed on its eve and V4 Pro is still served at unchanged billing, which is search-grade too — but our own bench refresh still scored deepseek-v4-pro-0813 as a separate model on Sep 16 · our sweep read the bare deepseek-flash alias on Sep 10 at $0.15/$0.60 per 1M, 1M ctx.
DeepSeek V4-Pro lands at $0.435/$0.87 — and "model names remain unchanged" hides a 2.7x price fork
2026-08-13 · DeepSeek launched V4-Pro today on app, web and API. The headline features are agent upgrades, selectable reasoning effort across V4-Pro and V4-Flash, and native OpenAI Responses API support optimised for Codex. The line worth reading twice is the quiet one: "Model names remain unchanged."
Qwen 3.8 Max vs DeepSeek V4 Pro: quick answers
Which is better, Qwen 3.8 Max or DeepSeek V4 Pro?
It depends on what you measure. Of the 6 public leaderboards that rate both, Qwen 3.8 Max scores higher on 5 and DeepSeek V4 Pro on 1. Qwen 3.8 Max's widest lead is on Artificial Analysis; DeepSeek V4 Pro's widest lead is on Vals AI. 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 DeepSeek V4 Pro at 37.1 (out of 100).
Which is newer, Qwen 3.8 Max or DeepSeek V4 Pro?
Qwen 3.8 Max. It went live on August 1, 2026, 99 days after DeepSeek V4 Pro (April 24, 2026).
Who makes Qwen 3.8 Max and DeepSeek V4 Pro?
Qwen 3.8 Max is from Alibaba; DeepSeek V4 Pro is from DeepSeek.
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