Best API & Subscription for Pi

To run Pi cost-efficiently, add Standard Compute to ~/.pi/agent/models.json as an OpenAI-format provider at https://api.stdcmpt.com/v1: its router sends each step to the cheapest model that can do it (Claude Fable 5.1 or GPT-6 Astra only when it counts), plans start at $19 a month with a $20 compute budget, and requests stop at the budget instead of billing overage. OpenCode Go is one coding-subscription candidate and OpenRouter offers usage-based model choice; compare them on a task you actually run in Pi.

Light or occasional use

Start with the smallest model that reliably completes your Pi tasks. Compare its measured cost with the current allowance of a supported coding subscription.

Daily use, cost-optimized

Standard Compute routes each Pi request to the cheapest model that can do it, and for every model we vet providers for price, uptime and speed, with automatic fallback. Opt-in Europe or US Compliance rules apply per key, team or company, and we don't train on your prompts or store them. Billing is one monthly plan when the allowance fits: configure it using the Pi setup guide, run a representative task, and monitor the monthly compute budget.

API and subscription options for Pi

Prices and allowances can change. OpenCode Go prices were checked against its linked public pages on October 13, 2026, DevPass prices on September 5, 2026; other entries link to current plans without quoting an unverified price. Spot an error? Tell us.

Setup for one model in Pi: Gemini · DeepSeek

Pi questions

What's the best flat-rate API for Pi that still gives GPT-5.6-class output?

Standard Compute serves GPT-5.6 Sol, GPT-5.6 Terra and GPT-6 Astra on every plan, from $19 a month, through one OpenAI-format provider entry in ~/.pi/agent/models.json with the base URL https://api.stdcmpt.com/v1. Pin openai/gpt-5.6-sol and Pi gets Sol on every request, or select Sol with GPT-6 Luna and use the model standardcompute so routine turns go to Luna. The bill is the plan price, and the budget is drawn at each model's per-token rate, so Sol pinned all day needs Standard ($89 a month, $95 budget) or Pro ($249, $269 budget). At the budget, requests stop with HTTP 402 instead of billing overage.

Can I run GPT-5.6 Luna for Pi on a flat plan without another OpenAI account?

Yes. Pin openai/gpt-5.6-luna, or the newer openai/gpt-6-luna, on a Standard Compute key: no OpenAI account, no usage tier and no second meter, and the cost is the plan price from $19 a month. We do not publish latency guarantees. The dashboard's request log shows the model and latency of every request, so measure Luna on your own Pi sessions in the first week.

Is there flat pricing for Pi so I stop flinching before hard Opus tasks?

Yes: on a monthly plan a hard task costs nothing extra. A $12 Opus 5 session at Anthropic's list rates ($5 / $25 per million tokens) draws about $12 from a Standard Compute budget, so Standard ($89 a month, $95 budget) covers about seven such sessions and nothing else, and Pro ($249, $269 budget) about 22. Claude Opus 5.5 lists lower, at $4 / $20. Let smart routing take the routine turns between hard tasks so most of the budget goes to the hard ones. When the budget is used, requests stop with HTTP 402 and nothing is billed on top.