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Grok News

Model releases, app features and incidents across xAI's Grok. Curated and summarized from dozens of sources by AIBriefs.

LaunchDevelopers1 source

Introducing Cursor Start

Cursor Start is a new India-only plan priced at ₹649/month via UPI or card, offering generous access to Grok 4.5 and Composer plus more agent requests than the Free plan. Cursor's India user base tripled to 3M developers in the past year, its third-largest market.

LaunchAI Models3 sources

SpaceXAI to release Grok 4.6 model in two weeks

The upcoming Grok 4.6 model is expected to feature 2 trillion parameters, an increase from the 1.5 trillion parameters in Grok 4.5. It is projected to outperform Kimi K3, with Grok 4.7 reportedly scheduled for release two weeks later.

LaunchAI Models1 source

xAI's Grok 4.3 launches on Amazon Bedrock

Grok 4.3 is now generally available on Amazon Bedrock. The model reasons reliably over long inputs, helping teams build agents and AI workflows.

LaunchAI Models15 sources

SpaceXAI releases Grok Voice Think Fast 2.0

The speech-to-speech model achieved 82.9% on the Speech-to-Speech Quality Index and 56.5% on Tau Voice for agentic performance. It features a 0.70s time-to-first-audio and is now available on Agent Builder via the xAI Console.

AnalysisAI Models1 source

Grok 4.5 vs GPT-5.6 Sol: Cost, Speed, and Agentic Coding Performance

Comparison covers benchmark scores, cost per task, inference speed, and real-world agentic behavior. Grok 4.5 packs a 131,072-token context window and was tuned to improve tool-use reliability; GPT-5.6 Sol targets deep reasoning for multi-turn coding workflows.

LaunchAI Models1 source

xAI releases Grok 4.5 model

xAI has launched Grok 4.5, marking the latest iteration of the company's foundation model series.

AnalysisAI Models1 source

CursorBench reveals Grok 4.5 training data contamination

Grok 4.5 achieved higher performance on CursorBench due to an earlier snapshot of the Cursor codebase being unintentionally included in its training data. This data leakage provided an advantage during the benchmark evaluation.

AnalysisAI Models1 source

Grok just broke the trend

Matthew Berman breaks down Grok's latest achievement that defies current AI trends. The video explores the implications for xAI and the broader model landscape.

LaunchAI Models1 source

xAI releases Grok 4.5

Grok 4.5 is priced at $2/M input and $6/M output, with closed weights. It scored 64.7% on SWE Bench Pro, trailing Fable at 80.4% and Opus 4.8 at 69.2%.