xAI
Organization · Lab · US · 15 items since Apr 2026
Models & products
- Models
Trends
Items
- Sep 21
xAI's Grok 4.7
The repeatedly delayed ~2.1T-parameter model shipped at Grok 4.6 pricing ($2/$6 per 1M tokens, 500K context), which xAI ranks third behind Anthropic and OpenAI for agentic coding.
- Sep 15
xAI delays Grok 4.7
Elon Musk said the roughly 2.1T-parameter model, originally slated for around September 12, was held back after reinforcement learning over-penalized answer length and made it stop early without verifying its work, with release now targeted for late September.
- Aug 12
xAI's Grok 4.6
A post-training upgrade on Grok 4.5 tuned for long-running agents, with a 500K-token context, a new xhigh reasoning-effort level, and $2/$6 per 1M-token pricing across Cursor, Grok Build, and the API.
- Jul 29
xAI's Grok Voice Think Fast 2.0
A next-generation speech-to-speech model with gains in speech reasoning, transcription accuracy, and tool-use reliability, priced at $0.08 per minute of audio and set to become the default grok-voice-latest model.
- Jul 15
xAI open-sources Grok Build
xAI released its coding-agent harness and terminal UI, including the agent loop, tools, and the skills, plugins, hooks, MCP, and subagent extension system, so it can run fully local-first against self-hosted inference.
- Jul 8
xAI's Grok 4.5
The lab's strongest model, co-trained with Cursor on tens of thousands of Nvidia GB300 GPUs, serves ~80 tokens/sec at $2/$6 per million tokens and resolves 64.7% of SWE-Bench Pro with roughly 4.2x fewer output tokens than Opus 4.8.
- Jul 1
xAI's Grok Voice Agent Builder
A no-code beta that assembles production voice agents on a single speech-to-speech Grok Voice path, bundling telephony, retrieval, tools, guardrails, MCP, and observability, billed at $0.05 per minute of audio.
- Jun 16
xAI's Grok Imagine Video 1.5 reaches general availability
The model moved from preview to general availability on the Imagine API, with a faster 1.5 Fast tier on web and mobile, native same-pass audio on the Aurora autoregressive architecture, and pricing of $4.20/min, roughly 86% below the deprecated Sora 2 Pro tier.
- Jun 11
xAI's Grok Build Plugin Marketplace
A terminal-native marketplace bundling skills, slash commands, agents, hooks, MCP servers, and LSPs into installable packages, each remote plugin pinned to a commit SHA and verified at install, launching with partners including MongoDB, Vercel, Sentry, and Cloudflare.
- Jun 3
Grok becomes Vapi's default voice
Grok becomes the default text-to-speech engine for Vapi's 12 core voices across the platform's 2.5M+ voice agents, with Grok speech-to-text and custom voice cloning exposed through the Grok Voice API.
- Jun 3
xAI's Grok Imagine Video 1.5 Preview
A new image-to-video model on the xAI API that animates a single still into short 720p clips with text-directed camera movement and multi-shot continuity, positioning xAI against Veo and Seedance after OpenAI pulled Sora.
- Jun 1
xAI's Composer 2.5 in Grok Build
A fast model now available in Grok Build, tuned for long-running tasks and complex instruction following.
- May 6
xAI adds Grok Connectors and custom voices
xAI added deep app integrations to Grok Web, a higher-realism Grok Imagine Quality Mode API, and Custom Voices with a Voice Library for cloning brand voices from short recordings.
- Apr 23
xAI's Grok Voice Think Fast 1.0 API
xAI's most capable voice agent became available through the API with multilingual support and simple per-usage pricing, completing its programmable voice surface alongside the speech-to-text and text-to-speech APIs.
- Apr 17
xAI's Grok Speech-to-Text API
Generally available alongside the existing TTS API, completing xAI's voice stack: speech-to-text covers 25 languages at $0.10/hr batch and $0.20/hr streaming, and text-to-speech costs $4.20 per 1M characters across five voices.