Supported Models

FishXCode supports a variety of AI models from multiple providers, covering different use cases and toolchains. You can freely choose and switch models based on your needs.

Anthropic (Claude)

Model ID	Description	Recommended Use Case	Compatible Tools
claude-sonnet-4-5-20250929	Claude Sonnet 4.5 latest, strongest overall	Complex coding, architecture design	Claude Code
claude-sonnet-4-5-20250514	Claude Sonnet 4.5 stable	Daily coding, code review	Claude Code
claude-haiku-4-5-20251001	Claude Haiku 4.5, balanced speed and quality	Quick completions, lightweight tasks	Claude Code
claude-3-5-haiku-20241022	Claude 3.5 Haiku, fastest response	High-frequency calls, real-time completions	Claude Code

OpenAI

Model ID	Description	Recommended Use Case	Compatible Tools
gpt-5	GPT-5, OpenAI flagship model	General coding, conversational development	Codex, RooCode, Qwen Code

Other Models

Model ID	Description	Recommended Use Case	Compatible Tools
glm-4.5	Zhipu GLM-4.5	General-purpose development	RooCode, Qwen Code
glm-4.6	Zhipu GLM-4.6, improved performance	Complex reasoning, development	RooCode, Qwen Code
deepseek-v3.1	DeepSeek V3.1, strong deep reasoning	Algorithm implementation, logical reasoning	RooCode, Qwen Code

Switching Models

Claude Code

Set the primary model via environment variables:

Linux/macOS

export ANTHROPIC_MODEL=claude-sonnet-4-5-20250929
claude

Windows PowerShell

$env:ANTHROPIC_MODEL = "claude-sonnet-4-5-20250929"
claude

Codex

Edit ~/.codex/config.toml and change the model field:

model = "gpt-5"

RooCode / Qwen Code

Change the Model field directly in the provider configuration. Any compatible model ID listed above can be used.

Model Recommendations

Best for Coding

claude-sonnet-4-5-20250929 — Strongest overall coding capability, ideal for complex projects and architecture-level tasks.

Best for Speed

claude-3-5-haiku-20241022 — Fastest response time, ideal for high-frequency calls and real-time completion scenarios.

Best Balance

claude-haiku-4-5-20251001 — Great balance between speed and quality, suitable for most daily development tasks.