@wienerberliner/pi-openai-fast

Minimal Pi extension for OpenAI Fast mode.

Packages

Package details

extension

Install @wienerberliner/pi-openai-fast from npm and Pi will load the resources declared by the package manifest.

npm repohome report
$ pi install npm:@wienerberliner/pi-openai-fast
Package
@wienerberliner/pi-openai-fast
Version
0.1.3
Published
Jul 22, 2026
Downloads
310/mo · 166/wk
Author
wienerberliner
License
MIT
Types
extension
Size
9 KB
Dependencies
0 dependencies · 1 peer
Pi manifest JSON
{
  "extensions": [
    "./extensions"
  ]
}

Security note

Pi packages can execute code and influence agent behavior. Review the source before installing third-party packages.

README

pi-openai-fast

Minimal Pi extension for OpenAI Fast mode.

It adds a /fast command and, when enabled, injects service_tier: "priority" into supported OpenAI/Codex provider requests. Codex uses priority as the wire value for the user-facing Fast tier.

Install

pi install npm:@wienerberliner/pi-openai-fast

For local development from this checkout:

pi -e /home/dev/Development/pi-daniel/extensions/pi-openai-fast

Usage

/fast
/fast on
/fast off
/fast status

Fast mode is off until first enabled. The most recent on/off setting is saved globally and restored for new, resumed, and reloaded sessions in every project. By default, it is stored at ~/.pi/agent/openai-fast.json.

When Fast mode is on and the current model is supported, the extension publishes the footer status key pi-fast-mode with the text Fast.

Supported models

  • openai/gpt-5.6-sol
  • openai/gpt-5.6-terra
  • openai/gpt-5.6-luna
  • openai/gpt-5.5
  • openai/gpt-5.4
  • openai/gpt-5.4-mini
  • openai-codex/gpt-5.6-sol
  • openai-codex/gpt-5.6-terra
  • openai-codex/gpt-5.6-luna
  • openai-codex/gpt-5.5
  • openai-codex/gpt-5.4
  • openai-codex/gpt-5.4-mini

The list is deliberately explicit so newly added OpenAI models do not start using the higher-usage Fast tier by surprise. Edit SUPPORTED_MODEL_KEYS in extensions/openai-fast.ts when OpenAI adds another Fast-capable model.

Behavior

The request payload is patched only when all of these are true:

  • /fast is enabled.
  • The active model is in the supported model list.
  • The serialized provider payload is an object.
  • The payload model matches the active Pi model id.
  • The payload does not already contain service_tier.

There are no runtime dependencies, provider registrations, or auth storage integrations. The extension only stores the global Fast-mode preference in Pi's agent configuration directory.

Development

npm install
npm run typecheck
npm test
npm pack --dry-run