Guide for using xAI Grok model API
xAI officially launched Grok Build in May 2026, and it has been the talk of the developer community for less than a week. Elon Musk has previously admitted that xAI lagged behind Anthropic and OpenAI in "coding capability," but Grok Build is xAI's first true AI coding agent designed to compete for market share, directly…
The official xAI announcement has just dropped: 8 legacy Grok models will be officially retired on May 15, 2026, at 12:00 PM PT. Requests will be automatically redirected to grok-4.3, but billing will be calculated based on the new model's pricing. This article provides a quick breakdown of what this means for AI developers and…
On May 6, 2026, xAI sent an official email to all API users titled "Grok 4.3 release and xAI API model retirement." The message delivered two critical updates for developers: Grok 4.3 is now fully available via the API, and eight legacy models—including grok-4-fast, grok-4-0709, grok-3, grok-code-fast-1, and grok-imagine-image-pro—will be retired on May 15, 2026,…
In April 2026, Claude Opus 4.7 set a new benchmark for coding models with a 87.6% score on SWE-bench Verified. Yet, just two weeks later, xAI challenged the long-held consensus that "coding models must be expensive" by releasing Grok 4.3 at one-tenth the cost. This article answers the two questions developers care about most: Can…
Author's Note: The latest xAI flagship, Grok 4.3, is now available via official API proxy service. This article provides a complete breakdown of its 1M context window, 159 t/s lightning-fast output, debut video input capabilities, and the domestic access plan that slashes costs by 40% compared to Grok 4.20. xAI launched Grok 4.3 Beta on…
At the end of April 2026, xAI and OpenAI released two flagship reasoning models almost simultaneously: Grok 4.3 and GPT-5.5. One has pushed the price of reasoning models down to $1.25/$2.50, while the other has driven agentic coding performance to 82.7% on Terminal-Bench. Both product roadmaps have converged on a 1M context window at the…
On April 30, 2026, xAI completed the full rollout of the Grok 4.3 API. The combination of slashing input prices by approximately 40%, expanding the context window to 1M tokens, and introducing native video input support for the first time has effectively rewritten the cost model for agentic applications. This article provides a comprehensive breakdown…
On February 17, 2026, xAI officially released Grok 4.20 Beta. It takes a highly unconventional approach to outperform the competition on the "non-hallucination rate" leaderboard—a space long dominated by the Claude and GPT series. Instead of simply stacking parameters or increasing inference steps, it employs four specialized agents (Grok / Harper / Benjamin / Lucas)…
On April 3, 2026, xAI officially launched two brand-new generation modes for Grok Imagine: Quality and Speed. They also teased a Pro mode, set to arrive at the end of April. This update marks a shift for AI image generation tools, moving away from "one-click generation" toward a new era of "layered quality control." Core…
Author's Note: The xAI flagship model, Grok 4.20 Beta, continues to iterate with an industry-leading 78% non-hallucination rate. It features native 4-Agent multi-agent collaboration, a 2 million token context window, and support for voice conversations and image/video generation. This article provides a deep dive into its core capabilities and practical value. Elon Musk's xAI released…
