← comparisons · head to head
GLM-5.3 vs DeepSeek V4 Pro
Of the 6 public leaderboards that rate both, GLM-5.3 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, GLM-5.3 is at 42.4 and DeepSeek V4 Pro at 28.8 (out of 100).
Scores as published by each board; table composed September 28, 2026.
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Leaderboard by leaderboard
| Board | GLM-5.3 | DeepSeek V4 Pro | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,619.1 | 1,582 | GLM-5.3 |
| LiveBench global average (0-100) | 76.1 | 77.4 | DeepSeek V4 Pro |
| SimpleBench AVG@5 % (private set) | 66.2 | 50.9 | GLM-5.3 |
| LLM Stats LLM Stats Score · composite (0-100), their rendered top 15 | 52.1 | 51.1 | GLM-5.3 |
| Vals AI Vals Index accuracy % · weighted finance + coding tasks | 57 | 52.4 | GLM-5.3 |
| Artificial Analysis intelligence index · measured runs only | 44.8 | 36 | GLM-5.3 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
For coding
On the ArtificialWatch coding index, GLM-5.3 is at 48.3 (#16 of 31) and DeepSeek V4 Pro at 40 (#19). GLM-5.3 scores higher on 2 of the 3 coding boards that rate both and DeepSeek V4 Pro on 1.
| Coding board | GLM-5.3 | DeepSeek V4 Pro |
|---|---|---|
| LMArena · Coding | 1,522 | 1,505.8 |
| LiveBench · Coding | 69.9 | 66.1 |
| Vals Vibe Code Bench | 78.1 | 82.3 |
GLM-5.3 at a glance
- Developer
- Zhipu AI
- Status
- Live since August 14, 2026
- API price
- $1.40 input / $4.40 output per 1M tokens · Z.AI, glm-5.3
- Context window
- 1M tokens
Live - same 743B base as 5.2, every gain from post-training · tops CyberGym · open weights on Hugging Face (zai-org/GLM-5.3, 141 safetensors files, public when we read it Sep 25; repo created Aug 25).
GLM-5.3 tops CyberGym and trails the frontier on exploitation — and we missed it because the sweep had no eyes on models.dev
2026-08-14 · Z.ai shipped GLM-5.3 today, and we did not catch it. The entry was armed and the pattern was right — the sweep simply had no source that carried the id. That is now fixed, and the fix is the more useful half of this post.
DeepSeek V4 Pro at a glance
- Developer
- DeepSeek
- Status
- Live since April 24, 2026
- API price
- $0.435 input / $0.87 output per 1M tokens · DeepSeek, deepseek-v4-pro
- Context window
- 1M tokens
Live · open weights · superseded by V4.1 Flash — per DeepSeek's own changelog rather than our own reading, deepseek-v4-flash routes to V4.1 Flash; the matching deepseek-v4-pro cutover set for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."
GLM-5.3 vs DeepSeek V4 Pro: quick answers
Which is better, GLM-5.3 or DeepSeek V4 Pro?
It depends on what you measure. Of the 6 public leaderboards that rate both, GLM-5.3 scores higher on 5 and DeepSeek V4 Pro on 1. GLM-5.3's widest lead is on Artificial Analysis; DeepSeek V4 Pro's widest lead is on LiveBench. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, GLM-5.3 is at 42.4 and DeepSeek V4 Pro at 28.8 (out of 100).
Which is newer, GLM-5.3 or DeepSeek V4 Pro?
GLM-5.3. It went live on August 14, 2026, 112 days after DeepSeek V4 Pro (April 24, 2026).
Which is cheaper, GLM-5.3 or DeepSeek V4 Pro?
DeepSeek V4 Pro is cheaper on both input and output. On each vendor's own API, GLM-5.3 is $1.40 input / $4.40 output per million tokens and DeepSeek V4 Pro is $0.435 input / $0.87 output per million tokens. Prices as published in the models.dev catalog, as of 2026-09-27.
Which has the bigger context window, GLM-5.3 or DeepSeek V4 Pro?
Neither. Both take 1M tokens.
How do GLM-5.3 and DeepSeek V4 Pro compare for coding?
On the ArtificialWatch coding index, GLM-5.3 is at 48.3 (#16 of 31) and DeepSeek V4 Pro at 40 (#19). GLM-5.3 scores higher on 2 of the 3 coding boards that rate both and DeepSeek V4 Pro on 1.
Who makes GLM-5.3 and DeepSeek V4 Pro?
GLM-5.3 is from Zhipu AI; 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 28, 2026). Boards measure different things, so raw scores are only comparable within a row.
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