Claude Opus 5 is now live on CometAPI โ†’

xAI Blog

Grok 4.1 fast API
Jan 6, 2026
grok 4.1 fast
xAI

Grok 4.1 fast API

Grok 4.1 Fast is xAIโ€™s production-focused large model, optimized for agentic tool-calling, long-context workflows, and low-latency inference. Itโ€™s a multimodal, two-variant family designed to run autonomous agents that search, execute code, call services, and reason over extremely large contexts (up to 2 million tokens).

xAI launches Imagine v0.9 โ€” what it is and how to access now
Jan 15, 2026
Imagine v0.9
xAI

xAI launches Imagine v0.9 โ€” what it is and how to access now

xAI announced Imagine Imagine v0.9, a major update to its Grok โ€œImagineโ€ text-and-image-to-video family that, for the first time in its pipeline, generates

Grok 4 Fast API launch: 98% cheaper to run, built for high-throughput search
Jan 6, 2026
grok 4
Grok 4 Fast
xAI

Grok 4 Fast API launch: 98% cheaper to run, built for high-throughput search

xAI announced Grok 4 Fast, a cost-optimized variant of its Grok family that the company says delivers near-flagship benchmark performance while slashing the

Grok-code-fast-1 Prompt Guide: All You Need to Know
Jan 6, 2026
grok-code-fast-1
xAI

Grok-code-fast-1 Prompt Guide: All You Need to Know

Grok Code Fast 1 (often written grok-code-fast-1) is xAIโ€™s newest coding-focused large language model designed for agentic developer workflows: low-latency,

Grok Code Fast 1 API: What is and How to Access
Jan 6, 2026
grok-code-fast-1
xAI

Grok Code Fast 1 API: What is and How to Access

When xAI announced Grok Code Fast 1 in late August 2025, the AI community got a clear signal: Grok is no longer just a conversational assistant โ€” itโ€™s being

How to Access Grok 4 API
Jan 6, 2026
grok 4
xAI

How to Access Grok 4 API

Grok 4 is the latest large language model (LLM) offering from Elon Muskโ€™s AI startup, xAI. Officially unveiled on July 9, 2025, Grok 4 touts itself as โ€œthe

Grok 4 VS Claude Opus 4: Which is Better?
Jan 6, 2026
Claude Opus 4
grok 4
xAI

Grok 4 VS Claude Opus 4: Which is Better?

The rapid evolution of large language models (LLMs) has ushered in a new era of AI-driven productivity, with xAIโ€™s Grok 4 and Anthropicโ€™s Claude Opus 4

How Can You Use Grok 4 on CometAPI via API
Jan 6, 2026
grok 4
xAI

How Can You Use Grok 4 on CometAPI via API

Grok 4, unveiled by Elon Muskโ€™s xAI on July 10, 2025, represents the most powerful iteration of the Grok series to date. Built as a pure reasoning model, it