Grok 4.3 (no thinking)
Grok 4.3 (no thinking) (xAI) was released on Apr 17, 2026. In the Epoch AI capability ranking (ECI), it ranks #62 out of 267 models, with 149.21. On Arena, which measures human preference in blind comparisons, it has 1,425 ELO points (#145). On LiveBench, the overall average is 62.3, #58 out of 58 scored models.
What to compare Grok 4.3 (no thinking) with
The models from other labs closest in capability and released in the same period, at most two per lab. Click any of them to see its page.
| Model | Lab | ECI | ELO | LiveBench | Release |
|---|---|---|---|---|---|
| Kimi K2.7 Code | Moonshot | 149.87 | n/a | 68.4 | Jun 12, 2026 |
| GPT-5.1 | OpenAI | 149.76 | 1,495 | n/a | Nov 13, 2025 |
| Qwen 3.6 Max (Preview) | Alibaba | 149.24 | 1,488 | n/a | Apr 20, 2026 |
| Grok 4.3 (no thinking) | xAI | 149.21 | 1,425 | 62.3 | Apr 17, 2026 |
| DeepSeek-V4-Pro | DeepSeek | 149.19 | 1,486 | 71.6 | Apr 24, 2026 |
| GPT-5.4 Mini | OpenAI | 148.77 | 1,446 | 66.4 | Mar 17, 2026 |
| Inkling | Thinking Machines | 148.59 | 1,492 | 71.9 | Jul 15, 2026 |
Other models from xAI
The models from the same lab closest in time, newest first.
| Model | Release | ECI | ELO | LiveBench | Access |
|---|---|---|---|---|---|
| Grok 4.7 | Sep 21, 2026 | 154.37 | 1,453 | 77.4 | API access |
| Grok 4.6 | Aug 12, 2026 | 156.31 | 1,475 | 78.0 | API access |
| Grok 4.5 | Jul 8, 2026 | 153.93 | 1,495 | 75.8 | API access |
| Grok 4.3 (no thinking) | Apr 17, 2026 | 149.21 | 1,425 | 62.3 | Hosted access (no API) |
| Grok 4.3 Beta | Apr 17, 2026 | 148.95 | n/a | n/a | Hosted access (no API) |
| Grok 4.20 | Feb 17, 2026 | 152.08 | n/a | n/a | API access |
| Grok 4 Fast | Sep 19, 2025 | 144.19 | 1,437 | n/a | API access |
| Grok 4 | Jul 9, 2025 | 146.43 | n/a | n/a | API access |
| Grok-3 mini | Jun 24, 2025 | 140.33 | 1,394 | n/a | API access |
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What people ask about Grok 4.3 (no thinking)
Where does Grok 4.3 (no thinking) rank among AI models?
In the ROO3 AI Benchmark, ordered by the Epoch AI ECI, Grok 4.3 (no thinking) ranks #62 out of 267 models, with an ECI of 149.21. The ECI is a composite index that combines several hard benchmarks into a single scale. The position changes when a new model comes out, and the page is refreshed six times a day.
Where do the numbers on this page come from?
From the same three sources as the ranking, all openly licensed: Epoch AI (ECI and individual tests, CC BY 4.0), Arena (human-preference ELO, CC BY 4.0) and LiveBench (overall average, CC BY-SA 4.0). ROO3 does not measure any model. When the page shows a figure published by the maker itself, it appears in the written analysis, labeled as the maker's, and never enters the ranking.
Where each number comes from
Epoch AI, "AI Benchmarking Hub". Published at epoch.ai. Data under the CC BY 4.0 licence, reordered by roo3.co.
The Arena (LMArena) leaderboard, from the public lmarena-ai/leaderboard-dataset on Hugging Face, under the CC BY 4.0 licence. We are not affiliated with the Arena.
LiveBench, by the LiveBench team, published at livebench.ai under the CC BY-SA 4.0 license. The overall average is recomputed by roo3.co with the same formula as the website (average of the categories), and those numbers stay under CC BY-SA 4.0. We are not affiliated with LiveBench.
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