Grok 4.5
xAIProprietary
Grok 4.5 is a vision-language model from xAI. It ranks 31 of 167 on LMArena’s overall vision board with 1287±7 from 12,599 votes. Its best category is Creative writing (#23 of 104). License: Proprietary.
Key figures
- Developer
- xAI
- License
- Proprietary
- First seen (our snapshots)
- 2026-10-26
No data: Captioning, Entity recognition.
Who it suits
- Overall #31 of 167: upper half.
- Strongest category: Creative writing (#23 of 104).
- Proprietary; used through xAI’s apps or API.
Neighbours on the overall board
| # | Model | Score | Votes | License | Δ vs this model |
|---|---|---|---|---|---|
| 28 |  Claude Opus 4.8 Anthropic | 1289 | 18,800 | Proprietary | +2 |
| 29 |  GPT-6.1 Sol (Max) OpenAI | 1288 | 2,330 | Proprietary | +1 |
| 30 | Claude Sonnet 5.5 (xHigh) Anthropic | 1287 | 2,564 | Proprietary | +0 |
| 31 | Grok 4.5 xAI | 1287 | 12,599 | Proprietary | |
| 32 |  Gemini 3 Flash Google | 1285 | 39,131 | Proprietary | -2 |
| 33 | Claude Sonnet 4.6 Anthropic | 1283 | 27,408 | Proprietary | -4 |
| 34 |  Kimi K2.6 Moonshot AI | 1282 | 16,368 | Modified MIT | -5 |
Alternatives · More from xAI
| # | Model | Score | Votes | License |
|---|---|---|---|---|
| 52 | Grok 4.6 (High) xAI | 1263 | 7,261 | Proprietary |
| 55 | Grok 4.20 Beta (Reasoning, 0309) xAI | 1262 | 26,796 | Proprietary |
| 57 | Grok 4.20 Multi-Agent Beta (0309) xAI | 1259 | 24,532 | Proprietary |
| 79 | Grok 4.7 (xHigh) xAI | 1231 | 3,736 | Proprietary |
| 80 | Grok 4.3 xAI | 1229 | 27,901 | Proprietary |
Alternatives · Top open-weight models
| # | Model | Score | Votes | License |
|---|---|---|---|---|
| 24 |  GLM-5.3-Flash Z.ai | 1294 | 16,254 | MIT |
| 34 | Kimi K2.6 Moonshot AI | 1282 | 16,368 | Modified MIT |
| 38 |  DeepSeek-V4.1-Flash-20260910 (Max) DeepSeek | 1278 | 4,100 | MIT |
| 39 | Gemma 4 31B Google | 1276 | 40,219 | Apache 2.0 |
| 44 |  Qwen3.8-27B Alibaba | 1269 | 7,614 | Apache 2.0 |
How to read these scores
- If two scores differ by less than their ± intervals, the models are statistically close.
- Each category board is computed independently; do not compare scores across categories.
- Models with few votes move more; ranks of new entries may change.
FAQ
Where does Grok 4.5 rank among vision models?
Overall rank 31 (1287); OCR rank 31 (1293); Diagrams rank 32 (1304); Homework rank 41 (1295); Creative writing rank 23 (1293); Humor rank 34 (1276); English rank 35 (1285); Chinese rank 27 (1345) (LMArena, data as of Oct 26, 2026).
How good is Grok 4.5 at OCR?
Grok 4.5 ranks 31 of 123 on LMArena’s OCR board with 1293 (8,562 votes).
Is Grok 4.5 better with Chinese or English prompts?
Chinese board: #27 of 128 (1345); English board: #35 of 167 (1285). The boards are computed separately, so compare ranks rather than scores.
Is Grok 4.5 open-weight?
No. LMArena lists it as Proprietary; it is available through xAI’s apps or API.
How far is Grok 4.5 from #1?
#1 overall is Claude Fable 5 (High) (1325); Grok 4.5 has 1287, 38 points behind.
Sources
LMArena data published Oct 19, 2026.
Synced here Oct 26, 2026.
Price, context length and release date have no reliable public data here and are not shown; all figures come from snapshots, blanks are –.