xAI's Grok 4.3 Lands on Amazon Bedrock With 1M-Token Context and Native Video
Summary: Grok 4.3 is now available on Amazon Bedrock, letting AWS customers access xAI's latest reasoning model without leaving their existing cloud infrastructure.
Key Facts
- On-demand pricing: $1.25 input / $2.50 output per million tokens; cached input at $0.20/M
- 1-million-token context window with four configurable reasoning effort levels: none, low, medium, high
- Native video input, tool calling, structured output, and streaming support built in
- Runs on Mantle, Bedrock's new inference engine designed for price-to-performance efficiency
Why It Matters
Bedrock now hosts a real third-party frontier option alongside OpenAI and Anthropic models. xAI claims the lowest hallucination rate among frontier models — an assertion enterprise buyers in legal, financial, and customer-support workflows will quickly stress-test. Competitive pressure on Bedrock's model roster benefits AWS customers whether they pick Grok 4.3 or not.
Read More
- Grok 4.3 from xAI now available in Amazon Bedrock — AWS
- xAI launches Grok 4.3 with improved agentic performance — Artificial Analysis
How this story unfolded
- LLM
- — Large Language Model의 약자로, '거대 언어 모델'이라고 해요. ChatGPT, Claude 같은 AI가 바로 LLM이에요. 엄청나게 많은 텍스트를 학습해서 사람처럼 글을 쓰고 대화할 수 있어요.