The Dialog API uses symbolic techniques to form a control plane, accelerator, and LLM router for text, voice, and multimodal inputs. It enables the rapid "twitch" reactions needed for maintaining a realistic dialog with a situated agent, while reducing your spend on LLM resources. Think of it as a neuro-symbolic harness that adds precision, repeatability, and response curation, for important user interactions.
The engine lets you combine syntactic and semantic rules. Rules are stored as static JSON files, and can be edited using a visual authoring tool. Key features of the engine include:
Multistep transformation using both syntactic and semantic rules
An efficient, chart-based approach that considers end-to-end context before committing to an interpretation
A predicate-based user store that allows for the accumulation of working knowledge and long-term memories
Output that is well-adapted to a situated and/or embodied agent, including support for multimodal inputs and non-verbal behaviors
A compute-efficient design that allows for ultra low costs and latencies on domain-specific responses
A framework for harnessing slower and more expensive external APIs, most notably LLMs
You normally call the API from a server application that you manage, in order to provide storage for conversation state. This allows an agent to form long-term memories about each user. Because logs and conversation state are stored on your terms, you remain in complete control of the sensitive information they contain.
Highlights
Multistep transformation using both syntactic and semantic rules
Efficient, chart-based approach that considers end-to-end context before committing to an interpretation
A framework for harnessing slower and more expensive external APIs, most notably LLMs
AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
You pay per API request, so your cost tracks directly with how many calls you make. There is one usage-based dimension and no fixed subscription or minimum. Billing happens monthly, and charges appear on your regular AWS bill. Because pricing scales with each call, your spend rises and falls with actual use. You can cache the results the API returns, which can reduce the number of billable calls for many applications.
Top-of-mind questions for buyers
What counts as one billable API request for the Dialog API?
Each call you make to the Dialog API counts as one billable request. The API acts as a control plane and router for text, voice, and multimodal inputs. Every discrete call registers as one request, and your monthly total reflects the number of calls made.
Is there a minimum charge or subscription for the Dialog API?
No. There is no subscription and no minimum. You are billed monthly for the number of API calls made that month. If you make no calls, you incur no charge. Charges appear on your regular AWS bill.
How can I reduce the number of billable Dialog API requests?
You can cache the results the API returns and reuse them. Each API call fully specifies its inputs and outputs, so cached responses can serve repeated requests without a new billable call. This can lower call volume for many application types.
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