Model Selection Guide

Choose models by use case. Pass the model slug in every API request.

Scenario	Models	Protocol	Notes
Daily chat	Cost-efficient chat models	OpenAI SDK	Use POST /v1/chat/completions with any model from the catalog. Browse →
Reasoning / R1	deepseek/deepseek-v4-pro, reasoning-tuned models	OpenAI or Anthropic	Set max_tokens high enough for chain-of-thought output. Browse →
Coding & tools	Models with tool_use capability	OpenAI + tools	Pass tools in the request body; see API tab on each model page. Browse →
Long context	128K+ context window	Either SDK	Filter by context length in the model catalog. Browse →
Claude Code / agents	Any supported model slug	Anthropic SDK	Set ANTHROPIC_BASE_URL to https://api.aisays.ai/anthropic/v1 Browse →

Model ID format

Use provider/model-id from the model detail page or catalog. Example: deepseek/deepseek-v4-pro

Choose models by use case. Pass the model slug in every API request.

Scenario	Models	Protocol	Notes
Daily chat	Cost-efficient chat models	OpenAI SDK	Use POST /v1/chat/completions with any model from the catalog. Browse →
Reasoning / R1	deepseek/deepseek-v4-pro, reasoning-tuned models	OpenAI or Anthropic	Set max_tokens high enough for chain-of-thought output. Browse →
Coding & tools	Models with tool_use capability	OpenAI + tools	Pass tools in the request body; see API tab on each model page. Browse →
Long context	128K+ context window	Either SDK	Filter by context length in the model catalog. Browse →
Claude Code / agents	Any supported model slug	Anthropic SDK	Set ANTHROPIC_BASE_URL to https://api.aisays.ai/anthropic/v1 Browse →

Use provider/model-id from the model detail page or catalog. Example: deepseek/deepseek-v4-pro