xAI 宣布 Grok 4.3 上线 Amazon Bedrock，官方称幻觉率为前沿模型中最低
Grok on Amazon Bedrock Grok models are now available via Amazon Bedrock. Jun 17, 2026
- 1xAI 宣布 Grok 4.3 正式上线 Amazon Bedrock，开发者可在已支持的 AWS 区域调用
- 2官方称 Grok 4.3 幻觉率为前沿模型中最低，配 100 万 token 上下文窗口与 none/low/medium/high 四档推理强度
- 3官方列举 Artificial Analysis Omniscience 与 Tau2 Telecom 榜单、Vals AI Case Law 与 Corporate Finance 测评第一，注明对比主要前沿实验室
- 4定价为输入 $1.25、输出 $2.50 每百万 token，官方称每美元智能为其他前沿模型的 2-10 倍
Grok 4.3 进入 Amazon Bedrock 是 xAI 借 AWS 分发渠道切入企业 Agent 市场的动作，以低幻觉和单位成本为卖点。
- 影响：已部署在 AWS 上的企业可沿现有云合同与合规路径接入该模型；官方的定价与单位智能宣称，为客服 Agent 和长文档场景提供了新的比价基准；前沿模型进入云平台货架后，多云比价与替换成本更容易核算。
- 参考：可考虑在 Bedrock 上用自有客服或文档理解数据复测该模型，替代榜单口径；值得按 $1.25 与 $2.50 的百万 token 单价重算现有长文本链路成本；接入前先确认所在 AWS 区域是否已支持。
- 依据：幻觉率与每美元智能为 xAI 官方口径，暂无独立验证；榜单第一来自 Artificial Analysis 与 Vals AI 测评，系官方转引并注明对比主要前沿实验室。
Today, we’re excited to announce that Grok 4.3 is now generally available on Amazon Bedrock.
Grok 4.3 achieves the lowest hallucination rate among frontier models, offers 1-million-token context window, and supports configurable reasoning efforts (none, low, medium, high). Now, Amazon Bedrock users can leverage the model through Bedrock’s secure and reliable inference engine.
Leading Performance in Enterprise
Grok 4.3 is one of the strongest models available today for building enterprise-ready AI agents:
- #1 on Artificial Analysis Omniscience benchmark*, achieving the lowest hallucination rate among frontier models.
- #1 on Artificial Analysis Tau2 Telecom benchmark*, which evaluates real-world tool-calling performance in customer support agent scenarios.
- #1 on Vals AI Case Law and Corporate Finance benchmarks, which measure Grok's capabilities in complex document understanding tasks.
* In comparison to major frontier labs
Capabilities & Pricing
Grok 4.3 sits on the Pareto frontier for intelligence versus cost, delivering 2-10x more intelligence per dollar than other frontier models.
- Input: $1.25 per 1 million tokens
- Output: $2.50 per 1 million tokens
It features a 1 million context window that handles extremely long documents and codebases with ease. Developers can also configure reasoning: Use none for maximum speed on simple requests, or low / medium / high to scale reasoning effort to the difficulty of the problem.
Build with Grok 4.3 on Amazon Bedrock
Grok 4.3 is now available to all developers in supported AWS Regions.
bash
To get started, please visit the Grok on Amazon Bedrock documentation. We're excited to see what you build!
来源：xAI：News · x.ai