# xAI — AI news & analysis

xAI is Elon Musk's AI company, developer of the Grok models and the Colossus supercomputer.

- [Microsoft releases MAI-Transcribe-2-Streaming, topping real-time speech-to-text ranking](https://www.parallelquant.com/posts/microsoft-releases-mai-transcribe-2-streaming-topping-real-time-speech-t-67765b) (2026-10-03, MarkTechPost): Microsoft AI released its first real-time speech-to-text model, ranking #1 of 38 on Artificial Analysis' streaming word-error-rate (WER) benchmark. It reports 2.5% WER at about 0.13s latency across 60 languages, at $0.54 per hour during introductory pricing, in public preview on Foundry.
- [Anthropic, OpenAI, xAI, Google sued over pact to slow AI](https://www.parallelquant.com/posts/anthropic-openai-xai-google-sued-over-pact-to-slow-ai-5a6175) (2026-09-20, Tom's Hardware): A proposed class-action lawsuit accuses Anthropic, OpenAI, SpaceXAI (xAI), and Google of agreeing to deliberately slow AI development under the guise of safety. The lead counsel calls the arrangement a "self-serving" deal among the industry's most powerful for-profit companies rather than a genuine safety measure, and says it has been in motion for months.
- [SpaceXAI cuts Grok voice transcription error rate to 6.8%](https://www.parallelquant.com/posts/spacexai-cuts-grok-voice-transcription-error-rate-to-6-8-819004) (2026-09-19, MarkTechPost): SpaceXAI released Grok Voice Transcribe 2.0, a speech-to-text API for batch and streaming audio. The company says short-phrase word error rate across 19 languages fell from 20.6% to 6.8% versus version 1.0, while pricing stays at $0.10 per hour for batch and $0.20 per hour for streaming.
- [xAI, OpenAI, and Anthropic cosign AEF-1 evaluator standard](https://www.parallelquant.com/posts/xai-openai-and-anthropic-cosign-aef-1-evaluator-standard-17d736) (2026-09-15, Latent Space): A new standard called AEF-1 has emerged for third-party AI evaluators, with xAI, OpenAI, and Anthropic all cosigning it.
- [ChatGPT, Claude, Grok and Gemini suffer simultaneous outages](https://www.parallelquant.com/posts/chatgpt-claude-grok-and-gemini-suffer-simultaneous-outages-c8eed1) (2026-09-03, Ars Technica): ChatGPT, Claude, Grok, and Gemini all experienced service interruptions at nearly the same time. The cause of the overlapping downtime has not been officially explained by any of the companies.
- [Researchers show Grok leaks user data via encrypted prompt injection](https://www.parallelquant.com/posts/researchers-show-grok-leaks-user-data-via-encrypted-prompt-injection-2b5e3c) (2026-08-20, Ars Technica): Security researchers demonstrated a technique called Cryptographic Context Injection that gets xAI's Grok to exfiltrate user data by encrypting malicious instructions so they evade the model's safety filters. It's described as the latest in a series of methods for breaking LLM safety guardrails.

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Published by Parallel Quant — https://www.parallelquant.com