Pi Doubleword Provider

Pi extension for the Doubleword realtime and async model provider.

Doubleword provides model inference with multiple execution tiers. This extension registers the live doubleword provider, discovers available models from Doubleword when an API key is present, and lets you toggle realtime vs async execution from inside Pi.

Why Doubleword?

Doubleword's APIs are OpenAI-compatible and let you trade latency for lower cost:

• Realtime / priority: immediate responses for interactive coding.
• Async / flex: reduced pricing with background polling; Doubleword docs say submitted async work starts within about a minute.
• Batch: lowest pricing for bulk jobs with a 24h SLA.

Example published prices per 1M input/output tokens:

Model	Realtime	Async	Batch
DeepSeek V4 Flash	$0.14 / $0.28	$0.10 / $0.20	$0.07 / $0.14
GLM 5.2	$1.40 / $4.40	$1.05 / $3.30	$0.70 / $2.20

This provider exposes realtime and async in Pi; batch is better suited for offline evals and bulk jobs.

Install

pi install npm:@snehalyelmati/pi-doubleword-provider

Quick start

export DOUBLEWORD_API_KEY=...
pi --model doubleword/deepseek-ai/DeepSeek-V4-Flash

Use Alt+T or /doubleword-mode to toggle realtime vs async execution for Doubleword models.

Supported Doubleword generation models use medium reasoning by default. Press Shift+Tab to change thinking depth or turn reasoning off; the provider sends the selected level to Doubleword as reasoning_effort.

Configuration

Required for live models:

DOUBLEWORD_API_KEY                 live API key

Optional overrides:

DOUBLEWORD_BASE_URL                override API base URL
DOUBLEWORD_MODEL_CACHE_FILE        override cached /models catalog path
DOUBLEWORD_MAX_OUTPUT_TOKENS       override default 16384 output cap
DOUBLEWORD_LIVE_ASYNC_TIMEOUT_MS   override default 600000 async timeout
DOUBLEWORD_LIVE_ASYNC_POLL_MS      override default 2000 poll interval
DOUBLEWORD_CANCEL_TIMEOUT_MS       override default 10000 cancel request timeout
DOUBLEWORD_EXECUTION_MODE          realtime or async; defaults to realtime

Capabilities

• Registers the live doubleword provider in Pi.
• Discovers models from Doubleword /models and caches the catalog locally.
• Falls back to a small known model list when discovery is unavailable.
• Supports realtime priority execution and async/flex background polling.
• Marks registered Doubleword models with Fanout tier metadata for realtime, async, and batch.
• Sends top-level Doubleword reasoning_effort for reasoning-capable models; OCR/embedding models are marked non-reasoning.
• Converts Doubleword reasoning output into Pi thinking blocks.
• Supports Responses function-call tool use.
• Reports usage/cost metadata when returned by the provider.
• Best-effort cancels async background responses on timeout or user abort.

Development

The repo contains a doubleword-stub provider for local smoke tests. It is enabled only by development entrypoints, not by the published standalone provider package.

From the repo root:

pi -e . --model doubleword-stub/deepseek-v4-flash

Limitations

• Live use requires a Doubleword API key.
• Async responses are delivered after polling completes; token streaming before completion is not assumed.