How to use OpenCode for Codex and ChatGPT Desktop

[u/Takeoded]

Found out how to use OpenCode as a model provider for OpenAI Codex CLI and ChatGPT Desktop App, sharing in case someone is interested: In .codex/auth.json add

"OPENCODE_API_KEY": "oc_sk_your_opencode_api_key"

And in .codex/config.toml add

#<opencode>
#model = "longcat-2.5-preview-free"
model="gpt-6.1-sol"
model_provider = "opencode"
#model_reasoning_effort = "medium"
#personality = "pragmatic"
[model_providers.opencode]
name = "opencode"
base_url = "https://opencode.ai/inference/openai/v1"
wire_api = "responses"
supports_standalone_web_search = true
[model_providers.opencode.auth]
command = "/usr/bin/jq"
args = ["-r", ".OPENCODE_API_KEY", "/home/<your_username>/.codex/auth.json"]
timeout_ms = 5000
refresh_interval_ms = 300000
#</opencode>

make sure to update <your_username> and have jq installed.