Claude Code with Synthetic

With Synthetic's native Anthropic API support, you can now use Claude Code with any model we support.

Native Anthropic API Support

Synthetic now provides native Anthropic API compatibility, allowing Claude Code to work seamlessly without additional software!

Installation

bash

npm install -g @anthropic-ai/claude-code

Configuration

Environment Variables

Persistent Configuration

Add these values to your ~/.bashrc or ~/.zshrc to persist changes in new sessions.

bash

# Server configuration
export ANTHROPIC_BASE_URL=https://api.synthetic.new/anthropic  # What server to talk to instead of the default
export ANTHROPIC_AUTH_TOKEN=\${SYNTHETIC_API_KEY}  # Auth key

# Model configuration
export ANTHROPIC_DEFAULT_OPUS_MODEL=hf:zai-org/GLM-4.5  # The model to use for opus plan mode
export ANTHROPIC_DEFAULT_SONNET_MODEL=hf:zai-org/GLM-4.5  # The model to use for most tasks
export ANTHROPIC_DEFAULT_HAIKU_MODEL=hf:zai-org/GLM-4.5  # Primarily used for summarization
export CLAUDE_CODE_SUBAGENT_MODEL=hf:zai-org/GLM-4.5  # When starting subagents, what model to use

# Privacy configuration
export CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=1  # Don't send telemetry data

Creating a Convenient Function

For easier access, create a synclaude function that launches Claude Code with Synthetic configuration:

bash

# Add to ~/.bashrc or ~/.zshrc
synclaude() {
  ANTHROPIC_BASE_URL=https://api.synthetic.new/anthropic \
  ANTHROPIC_AUTH_TOKEN=${SYNTHETIC_API_KEY} \
  ANTHROPIC_DEFAULT_OPUS_MODEL=hf:zai-org/GLM-4.5 \
  ANTHROPIC_DEFAULT_SONNET_MODEL=hf:zai-org/GLM-4.5 \
  ANTHROPIC_DEFAULT_HAIKU_MODEL=hf:zai-org/GLM-4.5 \
  CLAUDE_CODE_SUBAGENT_MODEL=hf:zai-org/GLM-4.5 \
  CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=1 \
  claude "$@"
}

# Then use: synclaude

# Server configuration export ANTHROPIC_BASE_URL=https://api.synthetic.new/anthropic # What server to talk to instead of the default export ANTHROPIC_AUTH_TOKEN=\${SYNTHETIC_API_KEY} # Auth key # Model configuration export ANTHROPIC_DEFAULT_OPUS_MODEL=hf:zai-org/GLM-4.5 # The model to use for opus plan mode export ANTHROPIC_DEFAULT_SONNET_MODEL=hf:zai-org/GLM-4.5 # The model to use for most tasks export ANTHROPIC_DEFAULT_HAIKU_MODEL=hf:zai-org/GLM-4.5 # Primarily used for summarization export CLAUDE_CODE_SUBAGENT_MODEL=hf:zai-org/GLM-4.5 # When starting subagents, what model to use # Privacy configuration export CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=1 # Don't send telemetry data

# Add to ~/.bashrc or ~/.zshrc synclaude() { ANTHROPIC_BASE_URL=https://api.synthetic.new/anthropic \ ANTHROPIC_AUTH_TOKEN=${SYNTHETIC_API_KEY} \ ANTHROPIC_DEFAULT_OPUS_MODEL=hf:zai-org/GLM-4.5 \ ANTHROPIC_DEFAULT_SONNET_MODEL=hf:zai-org/GLM-4.5 \ ANTHROPIC_DEFAULT_HAIKU_MODEL=hf:zai-org/GLM-4.5 \ CLAUDE_CODE_SUBAGENT_MODEL=hf:zai-org/GLM-4.5 \ CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC=1 \ claude "$@" } # Then use: synclaude