Claude Sonnet 5.5 (xHigh)
AnthropicProprietary
Claude Sonnet 5.5 (xHigh) is a vision-language model from Anthropic. It ranks 30 of 167 on LMArena’s overall vision board with 1287±13 from 2,564 votes. Its best category is Diagrams (#12 of 123). License: Proprietary.
Key figures
- Developer
- Anthropic
- License
- Proprietary
- First seen (our snapshots)
- 2026-10-26
No data: Captioning, Entity recognition, Humor, Chinese.
Who it suits
- Overall #30 of 167: upper half.
- Strongest category: Diagrams (#12 of 123).
- Proprietary; used through Anthropic’s apps or API.
Neighbours on the overall board
| # | Model | Score | Votes | License | Δ vs this model |
|---|---|---|---|---|---|
| 27 |  GPT-5.4 OpenAI | 1292 | 22,804 | Proprietary | +5 |
| 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 | |
| 31 |  Grok 4.5 xAI | 1287 | 12,599 | Proprietary | +0 |
| 32 |  Gemini 3 Flash Google | 1285 | 39,131 | Proprietary | -2 |
| 33 | Claude Sonnet 4.6 Anthropic | 1283 | 27,408 | Proprietary | -4 |
Alternatives · More from Anthropic
| # | Model | Score | Votes | License |
|---|---|---|---|---|
| 1 | Claude Fable 5 (High) Anthropic | 1325 | 14,714 | Proprietary |
| 2 | Claude Opus 5.5 (High) Anthropic | 1321 | 3,035 | Proprietary |
| 3 | Claude Opus 5 (High) Anthropic | 1320 | 17,743 | Proprietary |
| 4 | Claude Fable 5.1 (Max) Anthropic | 1319 | 5,026 | Proprietary |
| 5 | Claude Opus 4.7 Anthropic | 1317 | 23,139 | 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 Claude Sonnet 5.5 (xHigh) rank among vision models?
Overall rank 30 (1287); OCR rank 29 (1297); Diagrams rank 12 (1329); Homework rank 15 (1331); Creative writing rank 58 (1242); English rank 31 (1289) (LMArena, data as of Oct 26, 2026).
How good is Claude Sonnet 5.5 (xHigh) at OCR?
Claude Sonnet 5.5 (xHigh) ranks 29 of 123 on LMArena’s OCR board with 1297 (1,780 votes).
Is Claude Sonnet 5.5 (xHigh) open-weight?
No. LMArena lists it as Proprietary; it is available through Anthropic’s apps or API.
How far is Claude Sonnet 5.5 (xHigh) from #1?
#1 overall is Claude Fable 5 (High) (1325); Claude Sonnet 5.5 (xHigh) 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 –.