28 models across 7 families · Latest: Grok 4.2 (2026-05)
Ethical AI for universal truth-seeking
xAI's portfolio covers 20 active models across 7 non-obsolete families, with task labels spanning coding, rag, and agents. Open a model detail page to compare provider routes and sourced benchmarks.
Portfolio context: 7 decision-task tags, 20 active tracked models, latest research stamp 2026-05-16.
Use this portfolio page for
- Teams evaluating coding, rag, and agents across this lab's releases
- Readers comparing families before locking a flagship SKU
- 20 tracked SKUs for migration and pricing follow-ups
Do not stop here for
- Choosing a hosting provider without opening a model page for price ladders
Active models
20
Non-deprecated SKUs linked to this researcher
Active families
7
Non-obsolete families in coverage
Open catalog
0 OSS
0 open-weight (text match)
Decision task tags
7
Mapped to the site-wide task taxonomy
Latest dated release
2026-05-16
Grok 4.2
Freshness
2026-05-16
Researched 2d ago
Release cadence
Showing 5 recent dated ships (full timeline below). Latest spotlight: Grok 4.2 (2026-05-16).
Where this lab wins
- Coding: 3 tracked models with SWE-bench / HumanEval-style scores.
- RAG: 6 tracked models with ruler / needle retrieval benchmarks.
- Agentic: 5 tracked models with BFCL, tau-bench, and SWE-bench tool-use coverage.
- Long-context: 9 tracked models with context-token or InfiniteBench-class signal.
Flagship quality / price signal
Anchor SKU: Grok-2 (best sourced coding Q/$ in this portfolio).
Coding task grade B · benchmark humaneval score 88.4 · cheapest tracked output from ladder $0.500 per 1M tokens
xAI is an American AI research organization founded in 2023. Ethical AI for universal truth-seeking. xAI ships 7 model families totaling 28 models, with the most recent release Grok 4.2 in 2026-05. Notable families include Grok 4, Grok Voice, and Grok Image. Use it as a stable reference for lab background, release coverage, and follow-up model pages as they are added.
About
xAI, founded in March 2023 by Elon Musk, is a pioneering entity in the realm of artificial intelligence research, emphasizing advancements in generative AI and large language models (LLMs). The company's mission to "understand the true nature of the universe" implies a focus on groundbreaking AI developments rather than immediate commercial gains. This approach positions xAI as a leader in exploring fundamental AI questions, a goal supported by their team's vast expertise in AI research and development, including significant contributions to critical AI methodologies like the Adam optimizer and Transformer-XL. Located in the San Francisco Bay Area and initially incorporated in Nevada, xAI benefits significantly from its strategic collaborations with X Corp and Tesla. These partnerships grant the company access to extensive datasets and computational resources, significantly enhancing its capacity to innovate and deploy cutting-edge AI solutions. The synergy with X Corp, in particular, hints at potential applications of xAI's technologies across various platforms, including social media, illustrating the transformative power of integrating AI with diverse digital ecosystems. At the forefront of xAI's achievements in AI research is the development of Grok, a conversational AI. The release of multiple iterations, such as Grok-1, Grok-1.5, Grok-1.5V, and Grok-2, demonstrates xAI's commitment to advancing LLMs capable of sophisticated reasoning and problem-solving. The decision to make Grok-1 open source manifests their dedication to fostering community engagement and collaborative progress within the AI research community. Additionally, the introduction of PromptIDE, a specialized integrated development environment for prompt engineering, underscores xAI's dedication to refining the tools essential for effective work with LLMs. xAI's financial trajectory, marked by a significant Series B funding round in May 2024 that valued the company at $24 billion, reflects a robust confidence in its potential by leading venture capital firms. Despite some discrepancies regarding the company's fundraising activities, including denials by Elon Musk about actively seeking funds, the substantial investment illustrates high expectations for xAI’s future contributions to AI advancements. This dynamic financial backdrop emphasizes the ever-evolving nature of xAI's journey as it navigates the challenges and opportunities within the AI industry landscape.
Featured models
| Model | Released | Context | Input price ($/1M) | Output price ($/1M) | License |
|---|---|---|---|---|---|
| Grok 4.2 | 2026-05-16 | - | - | - | Proprietary |
| Grok 4.20 Reasoning | 2026-05-16 | - | - | - | Proprietary |
| Grok 4.20 Non-Reasoning | 2026-05-16 | - | - | - | Proprietary |
Model families
Recent releases
- Grok 4.2- 2026-05-16
- Grok 4.20 Reasoning- 2026-05-16
- Grok 4.20 Non-Reasoning- 2026-05-16
- Grok 4.3- 2026-05-05
- Grok Voice Think Fast 1.0- 2026-04-23
FAQ
Who founded xAI and when?
xAI was founded in 2023 and is associated with San Francisco, California, United States.
What models has xAI released?
xAI ships 28 models across 7 families: Grok 4, Grok Voice, and Grok Image.
Is xAI's technology open source?
xAI's tracked models are primarily proprietary, with some license details still being verified.
Where is xAI headquartered?
xAI is headquartered in San Francisco, California, United States.
What is xAI known for?
Ethical AI for universal truth-seeking. Its most prominent tracked family is Grok 4.
How can I access xAI's models?
xAI's models are available via xAI Console, Chutes AI, Microsoft Foundry, OpenRouter, and Replicate API.
Explore related pages
Last reviewed: 2026-05-16. Data sourced from public lab announcements and provider documentation.