OPAL Chat Service - Choose Your Plan

Our Plans

Basic Interactive

$0 /month

Perfect for light, conversational use directly by end-users

20 prompts per session
2048 tokens per prompt
4096 tokens per session
No API access

Developer API

$10 /month

Ideal for developers integrating OPAL into applications

API key access
3 active sessions per 60s
4096 tokens per session
Rate limiting included

Dedicated Assistant

$50 /month

Specialized for embedded chat assistant applications

Chat assistant module only
20 prompts per session
4096 tokens per session
Automated purpose

Features Comparison

Feature	Basic Interactive	Developer API	Dedicated Assistant
Price	Free	$10/month	$50/month
API Access	✗	✓	✗
Max Prompts per Session	20	Unlimited*	20
Tokens per Prompt	2048	Configurable	Configurable
Session Token Limit	4096	4096	4096
Rate Limiting	N/A	3 sessions/60s	N/A
Chat Assistant Module	✓	✓	✓ (Only)
Best For	Personal use	Development	Enterprise apps

Frequently Asked Questions

What's the difference between the tiers? +

Each tier is designed for different use cases. The Basic tier is free and perfect for personal experimentation. The Developer tier includes API access for building applications. The Dedicated tier is specialized for enterprise chat assistant implementations.

Can I upgrade or downgrade my plan? +

Yes, you can change your plan at any time. Upgrades take effect immediately, while downgrades take effect at the next billing cycle. You'll receive prorated billing adjustments.

What happens if I exceed my token limits? +

If you reach your session token limit, the session will end and you'll need to start a new one. For the Developer tier, additional sessions beyond the rate limit will be queued or rejected depending on your configuration.

Is there a free trial for paid tiers? +

We offer a 7-day free trial for both the Developer API and Dedicated Assistant tiers. No credit card required to start your trial.

Glossary

API Key +

A unique identifier that allows applications to authenticate and access the OPAL Chat Service programmatically. Essential for developers integrating the service into their applications.

Token +

A unit of text processing in the OPAL system. Roughly equivalent to a word or word fragment. Used to measure and limit the amount of text that can be processed in prompts and responses.

Session +

A continuous conversation context between a user and the OPAL Chat Service. Sessions maintain conversation history and are subject to token limits and prompt restrictions.

Rate Limiting +

A control mechanism that restricts the number of requests or sessions that can be initiated within a specific time window. Ensures fair usage and system stability.

Chat Assistant Module +

A specialized component (urn:oai:agent:chat-assistant) that provides structured chat functionality. In the Dedicated tier, access is restricted exclusively to this module.