Skip to main content

​
AI Model Comparison Guide

This guide compares the AI models available for your AI agent by message credit cost, helping you balance capability against price. Each model is assessed across the dimensions that matter most: technical capability, empathy and communication, speed, the ability to take actions (such as escalating to a human, booking meetings, or changing subscriptions), and handling multi-step or complex tasks. Models are grouped below by how many message credits each consumes per message, listed from lowest to highest cost. GPT-5.6 Luna
GPT-5.6 Luna is the fastest and most cost-efficient tier of OpenAI’s GPT-5.6 family—optimized for high-volume, low-latency tasks while retaining the core capabilities of the 5.6 series.

Auto
Auto is engineered by Chatbase for peak performance, speed, and efficiency. It adapts to every conversation, giving instant answers for everyday questions and frontier grade intelligence for demanding ones, with multilingual and image understanding built in. One choice that handles every turn end to end, tools included.

Gemini 3 Flash
Gemini 3 Flash is a fast and efficient model with advanced reasoning capabilities. It balances quality, latency, and cost. Ideal for demanding tasks requiring quick responses with sophisticated reasoning, coding, multi-step function execution, and complex instruction following. GPT-5.6 Terra
GPT-5.6 Terra is the balanced tier of OpenAI’s GPT-5.6 family, pairing strong reasoning and context retention with everyday speed and cost efficiency—ideal for the majority of production AI workflows. Gemini 3.5 Flash
Gemini 3.5 Flash is a Google reasoning model that delivers fast, high-quality responses. It handles complex questions, multi-step instructions, and image understanding with ease, making it a strong fit for agents that need solid reasoning at low latency. Claude Sonnet 4.6
Claude Sonnet 4.6 is an Anthropic model in the Sonnet series that builds on 4.5 with stronger reasoning, improved instruction following, and better performance on complex multi-step tasks. It offers an excellent balance of intelligence and speed for everyday workflows. GPT-5.5
GPT-5.5 is one of OpenAI’s most capable models, delivering notably stronger reasoning, improved context retention, and better performance across highly demanding tasks. It delivers high accuracy and efficiency for enterprise workflows. Claude Opus 4.6
Claude Opus 4.6 is a powerful model in the Opus series that builds on 4.5 with stronger reasoning, improved instruction following, and better performance on complex multi-step tasks. It excels at demanding coding challenges, agentic workflows, and sophisticated problem-solving while managing context efficiently.