Grok 4.3 Joins Amazon Bedrock, Setting New AI Benchmarks
Grok 4.3, one of the most advanced generative AI models, is now available on Amazon Bedrock, Amazon Web Services' (AWS) platform for foundation models (FMs). The announcement, made by x.ai on June 17, 2026, expands Bedrock's offerings and gives developers access to Grok’s enterprise-grade capabilities, including a 1-million-token context window and industry-leading accuracy.
What sets Grok 4.3 apart? For one, it boasts the lowest hallucination rate among frontier models, according to benchmark testing by Artificial Analysis Omniscience. It also excels in practical applications, ranking #1 in telecom, corporate finance, and legal document analysis benchmarks. With configurable reasoning levels—ranging from "none" for speed to "high" for complex problem-solving—Grok 4.3 caters to a range of enterprise use cases, from simple queries to intricate decision-making tasks.
Pricing is competitive as well. At $1.25 per 1 million tokens for input and $2.50 per 1 million tokens for output, Grok sits on the Pareto frontier for cost-efficiency, delivering 2-10x more intelligence per dollar compared to major rivals. This makes it a viable choice for businesses looking to scale AI-driven solutions without breaking the bank.
Amazon Bedrock, first introduced in April 2023, has become a cornerstone for enterprises adopting generative AI. The platform provides API-based access to models from leading providers, including OpenAI, Anthropic, Meta, and Cohere, alongside AWS’s own Titan models. With Bedrock’s unified API and robust security features, enterprises can integrate multiple AI models into their workflows without managing the underlying infrastructure. Recent updates, such as a redesigned console launched on June 4, 2026, enhance usability with features like side-by-side model comparisons and SDK integrations.
The addition of Grok 4.3 follows a series of high-profile launches on Bedrock this month. On June 1, OpenAI’s GPT-5.5, GPT-5.4, and Codex models became available, and Anthropic’s Claude Fable 5 joined the platform on June 9. By incorporating Grok, AWS is further reinforcing Bedrock’s position as the go-to marketplace for enterprise AI.
For developers, Grok’s 1-million-token context window is a game-changer, enabling the processing of lengthy documents and complex codebases seamlessly. Combined with AWS’s PrivateLink, IAM integration, and VPC isolation, this ensures that sensitive workloads stay secure while benefiting from Grok’s advanced capabilities.
The timing of this launch is significant. Amid growing demand for generative AI solutions, Grok’s proven benchmarks and cost-efficiency will likely attract enterprises in sectors ranging from finance to telecom. As AWS continues to expand Bedrock’s offerings, it solidifies its role in shaping the enterprise AI market.
Grok 4.3 is now available in supported AWS regions. Developers can start exploring its capabilities through the official documentation.