- 🔧 Coding model purpose-built for agentic software engineering workflows.
- 📏 256,000-token context window for long-horizon coding.
- 🆕 Launched May 2026 in public beta via xAI API.
- 🔧 Supports tool calls, MCP, web development, and debugging.
- ⚡ Powers xAI's terminal-based Grok Build CLI agent.
- 🌐 Runs in Cursor, Kilo Code, OpenCode, and Hermes Agent.
xAI is an American artificial intelligence company and wholly owned subsidiary of SpaceX. The company develops AI systems under the Grok brand, spanning language models, image generation, and video synthesis. xAI has quickly established itself as a multimodal AI lab with…
Explore 4 more models by XAI (company) →Grok Build 0.1 is xAI's first model in a dedicated coding family, trained specifically for agentic software engineering rather than general conversation. Released in May 2026 and offered in public beta through the xAI API, it targets multi-step development: autonomously planning, writing, refactoring, and iterating on code, invoking tools, and supporting the Model Context Protocol for web development and debugging. It produces text output across these long-horizon coding loops.
Because this is the family's debut, there is no same-family predecessor to compare against. Functionally, it diverges from xAI's general-purpose flagships such as [[sibling:grok-4-3|Grok 4.3]], which carries a larger one-million-token context and always-on reasoning, and [[sibling:grok-4-20|Grok 4.20]] with its two-million-token window and toggleable reasoning. Grok Build 0.1 trades that breadth for a tighter 256,000-token window optimized to hold a mid-sized codebase in memory during long-horizon coding loops.
The model powers xAI's terminal-based Grok Build CLI and runs inside agentic harnesses including Cursor, Kilo Code, OpenCode, and Hermes Agent. It sits alongside multi-agent siblings like [[sibling:grok-4-20-multi-agent|Grok 4.20 Multi-Agent]] in xAI's broader lineup.
This About section is AI-generated from public sources via VeniceStats + Venice inference, with no human editing. It may contain inaccuracies.
| Seller | Reputation↓ | Input $/M | Cached $/M | Output $/M | Categories | API |
|---|---|---|---|---|---|---|
| Open Ant 0xe4f6…5bc4 | 84 | $1.00 | $0.50 | $2.00 | chat,coding,reasoning,code | openai-chat-completions |
| surplusintelligence.ai 0x0e49…8927 | 79 | $0.30 | $0.06 | $0.60 | agents,anon,chat,cheap,code,coding,developer,frontier,function-calling,multimodal,reasoning,research,tasks,tools,vision,web-search | openai-chat-completions |
| Prime Seed 0x71e2…fc07 | 75 | $1.10 | $1.10 | $2.20 | coding,agentic,premium | openai-chat-completions |
| Fire Ant 🔥🐜 0xbe05…bc5d | 54 | $0.90 | $0.18 | $1.7323 | agent,agents,anon,chat,cheap,code,coding,developer,fallback,frontier,function-calling,grok,json,math,multimodal,reasoning,research,router,tasks,tools,vision,web-search | — |
| D5V1N2 0xd5e7…7be0 | 41 | $0.72 | $0.144 | $1.44 | chat,coding,reasoning,vision,web-search,router,fallback,grok | openai-chat-completions |
| antseed-neon-puma-944e 0x6650…944e | 26 | $0.341 | $0.20 | $0.8711 | chat,coding,math | openai-chat-completions |
| Leftermute 0x388b…5389 | 18 | $0.5808 | $0.5808 | $1.7423 | chat,coding,json,tools | openai-chat-completions |
"Best price" and the seller table are live AntSeed catalog data (advertised $/1M tokens, not settled amounts). Reputation = on-chain trust (0-100). Model knowledge (TLDR, provider, About) via the VeniceStats enrichment layer. Advertised catalog, not the model used in any specific purchase.