Common Questions About Model Selection

Does it Support Custom Third-Party Models?

Answer: No

Design Philosophy

To reduce cognitive burden for users during use, Dessix pre-configures the most appropriate default models for different usage scenarios.

Scenario-Based Model Configuration

Scenario Matching: Dessix configures the most suitable default model according to different usage scenarios
Cost Optimization: Simple scenarios use economical models, complex scenarios use advanced models
User Control: In supported scenarios, users can specify particular models through Mention

Scenarios and Models

Dessix uses pre-configured default models according to different usage scenarios:

Scenario-Model Mapping

Usage Scenario	Default Model	Supports Specification	Rationale
Chat Dialogue	Gemini 3 Pro	✅ Yes	Complex conversations require the strongest reasoning
Custom Generation	Dynamic Selection	✅ Yes	Based on user specification or system default model
Summary Generation	Gemini 2.5 Flash	❌ No	Summary tasks are relatively simple, use economical model
Metadata Extraction	Gemini 2.5 Flash	❌ No	Structured extraction task, prioritize cost efficiency
Chat Title Gen	Gemini 2.5 Flash	❌ No	Simple text generation, optimize response speed
Chat Suggestions	Gemini 2.5 Flash	❌ No	Lightweight task, optimize cost
Text Completion	Gemini 2.5 Flash	❌ No	Fast completion, optimize response speed

Advantages of Scenario-Based Configuration

Cost Optimization: Simple scenarios use economical models, complex scenarios use advanced models
Performance Balance: Pre-configure the most suitable model based on scenario characteristics
User-Transparent: Automatic, no manual intervention needed

How to Specify Models?

In scenarios that support model specification (Chat dialogue, Custom generation), you can specify through the following methods:

Method 1: Specify via Mention (Recommended)

Use the @ symbol to mention the model name in the conversation.

Prerequisites

You need to install the corresponding model from Dessix Community first. The entry is the Community button in the upper right corner of the interface (shortcut Ctrl + M).

Method 2: Declare Model ID in Text

Directly state the model ID you want to use in the conversation.

Method 3: Use Model Aliases

Each model has multiple aliases; you can use shorter names.

Method 1: @ MentionMethod 2: Model IDMethod 3: Model Alias

txt

@claude-sonnet-4 Please help me analyze the performance issues in this code

@gemini-3-pro This is a complex reasoning task, please help me solve it

txt

Use anthropic/claude-sonnet-4.5 to complete this task, ......

Please use google/gemini-2.5-pro to handle this problem

txt

Use gemini25pro to help me handle this task

Complete with claude4sonnet

Note

The system does not support automatically switching models through task type descriptions (e.g., "This is a programming task"). If you need to use a specific model, please explicitly specify the model ID, name, or alias.

Built-in Model List

Dessix currently has high-quality models from multiple providers built-in, listed from lowest to highest consumption tier:

Tier	Included Models	Characteristics
Free	GPT-OSS 20B	Free fallback model, usable after credits run out
Economy	Gemini 2.5 Flash Lite, Gemini 2.5 Flash, Gemini 3 Flash, Grok 4 Fast, Grok Code Fast 1, GLM 4.7, DeepSeek	Fast response, suitable for daily conversations and light tasks
Standard	Gemini 2.5 Pro, Gemini 3 Pro, Gemini 3.1 Pro, GPT-5.2	Strong reasoning, suitable for complex tasks
Premium	Claude 4.5 Sonnet	Balances performance and efficiency, multimodal support
Flagship	Claude Opus 4.6	Frontier reasoning model, complex engineering and agentic workflows

Check Latest Pricing

Credit consumption, limited-time offers, and other model pricing details may change at any time. Please refer to the official pricing page for the latest information.

Design Thinking

Why Not Expose Model Selection?

Avoid Becoming a Playground Tool

If model selection is exposed, Dessix might become a complex Playground tool
Need to explain to users what models are suitable for what tasks
Model SOTA keeps changing, which increases users' mental burden

Reduce Cognitive Load

Users don't need to understand the characteristics and applicable scenarios of various models
Focus on the task itself, not tool selection
Simplify usage flow, improve efficiency

Transparency Needs of Advanced Users

For advanced users who need to know which model is being used:

Recommended Approach

Use @ mention to explicitly specify models
Can view supported models through the model list

Usage Tips

Use @model-name for quick specification
Use complete model ID for precise specification
Use short aliases (e.g., gemini25pro) to improve efficiency

Best Practices

General Users

Directly describe your needs and tasks
Dessix will automatically select the default model based on usage scenario
Focus on result quality rather than model selection

Advanced Users

Use @ mention to precisely control model selection
Specify via model ID or alias in Chat dialogue
Utilize model aliases for quick specification
Understand different models' strengths and manually select when needed

Through this design, Dessix maintains both ease of use and sufficient control for advanced users.

Common Questions About Model Selection ​

Does it Support Custom Third-Party Models? ​

Design Philosophy ​

Scenario-Based Model Configuration ​

Scenarios and Models ​

Scenario-Model Mapping ​

Advantages of Scenario-Based Configuration ​

How to Specify Models? ​

Method 1: Specify via Mention (Recommended) ​

Method 2: Declare Model ID in Text ​

Method 3: Use Model Aliases ​

Built-in Model List ​

Design Thinking ​

Why Not Expose Model Selection? ​

Transparency Needs of Advanced Users ​

Best Practices ​

General Users ​

Advanced Users ​