Provider, United States # xAI models > xAI's highest-ranked model is Grok 4.6, #21 on the Noometry Index as of October 2026. Noometry tracks 16 xAI models. Benchmarks, prices and context windows for every xAI model. - Canonical page: https://noometry.com/providers/xai - Last updated: 2026-10-10 - Title: xAI AI Models Ranked (October 2026) | Noometry xAI's highest-ranked model is Grok 4.6, #21 on the Noometry Index as of October 2026. Noometry tracks 16 xAI models. Last verified October 10, 2026 [x.ai](https://x.ai)[API pricing](https://noometry.com/llm-pricing/xai) 16 models xAI models | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 21 | xAI [Grok 4.6](https://noometry.com/models/grok-4-6) | [xAI](https://noometry.com/providers/xai) | Proprietary | 500K | 56.9 | $2 | $6 | 19 | — | | 25 | xAI [Grok 4.5](https://noometry.com/models/grok-4-5) | [xAI](https://noometry.com/providers/xai) | Proprietary | 500K | 55.0 | $2 | $6 | 18.3 | 4 | | 37 | xAI [Grok 4.7](https://noometry.com/models/grok-4-7) | [xAI](https://noometry.com/providers/xai) | Proprietary | 500K | 53.1 | $2 | $6 | 17.7 | — | | 54 | xAI [Grok 4.20 (Non-Reasoning)](https://noometry.com/models/grok-4-20) | [xAI](https://noometry.com/providers/xai) | Proprietary | 1M | 48.6 | $1.25 | $2.50 | 31.1 | 61 | | 56 | xAI [Grok 4](https://noometry.com/models/grok-4) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | 48.1 | — | — | — | 1 | | 65 | xAI [Grok 4.20 Multi-Agent](https://noometry.com/models/grok-4-20-multi-agent) | [xAI](https://noometry.com/providers/xai) | Proprietary | 1M | 46.2 | $1.25 | $2.50 | 29.6 | — | | 86 | xAI [Grok 4.3](https://noometry.com/models/grok-4-3) | [xAI](https://noometry.com/providers/xai) | Proprietary | 1M | 43.8 | $1.25 | $2.50 | 28 | — | | 134 | xAI [Grok 4.1](https://noometry.com/models/grok-4-1) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | 41.5 | — | — | — | — | | 136 | xAI [Grok 4.1 Fast](https://noometry.com/models/grok-4-1-fast) | [xAI](https://noometry.com/providers/xai) | Proprietary | 128K | 41.4 | $0.20 | $0.50 | 150 | — | | 141 | xAI [Grok-3 mini](https://noometry.com/models/grok-3-mini) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | 41.2 | — | — | — | 10 | | 157 | xAI [Grok 3](https://noometry.com/models/grok-3) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | 39.9 | — | — | — | 42 | | 167 | xAI [Grok 4 Fast](https://noometry.com/models/grok-4-fast) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | 39.4 | — | — | — | 577 | | 198 | xAI [Grok 2 Mini 2024 08 13](https://noometry.com/models/grok-2-mini) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | 37.7 | — | — | — | — | | 216 | xAI [Grok Build 0.1](https://noometry.com/models/grok-build-0-1) | [xAI](https://noometry.com/providers/xai) | Proprietary | 256K | 36.4 | $1 | $2 | 29.1 | — | | 239 | xAI [Grok-2 (Dec 2024)](https://noometry.com/models/grok-2) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | 33.7 | — | — | — | — | | | xAI [Grok 4 Heavy](https://noometry.com/models/grok-4-heavy) | [xAI](https://noometry.com/providers/xai) | Proprietary | — | Not ranked | — | — | — | — | ## xAI's best vs other flagships - [Grok 4.6 vs Qwen3.8 Max](https://noometry.com/compare/grok-4-6-vs-qwen3-8-max) - [Grok 4.6 vs GPT-6 Astra](https://noometry.com/compare/gpt-6-astra-vs-grok-4-6) - [Grok 4.6 vs Gemini 3.8 Flash](https://noometry.com/compare/gemini-3-8-flash-vs-grok-4-6) - [Grok 4.6 vs Claude Fable 5.1](https://noometry.com/compare/claude-fable-5-1-vs-grok-4-6) - [Grok 4.6 vs Muse Spark 1.3](https://noometry.com/compare/grok-4-6-vs-muse-spark-1-3) - [Grok 4.6 vs Mistral Large 4](https://noometry.com/compare/grok-4-6-vs-mistral-large-4) ## Frequently asked questions ### What is the best xAI model? xAI's highest-ranked model is Grok 4.6, #21 on the Noometry Index as of October 2026. Noometry tracks 16 xAI models. ### What is the cheapest xAI model? Grok 4.1 Fast has the lowest input price among xAI models we track: $0.20 per million input tokens and $0.50 per million output tokens.