GPT-5.5 Pro

openai· 2026-04-23· 1.1M ctx

API onlytool callreasoningstructured quant: unknown

spread (output)

1.4×

$164 – $225 · 19 providers

19 providers priced

Provider	Input	Output	Cache rd	Blended
Poe relay router	$27.27	$164	—	$39.68^*
CrossModeltiered relay router	$30.00	$180	—	$43.65^*
Eden AItiered relay router	$30.00	$180	—	$43.65^*
FastRouter relay router	$30.00	$180	—	$43.65^*
Impossibltiered relay router	$30.00	$180	$3.00	$26.47
Kilo Gateway relay router	$30.00	$180	—	$43.65^*
DevPass (LLM Gateway)tiered relay router	$30.00	$180	—	$43.65^*
LLM Gatewaytiered relay router	$30.00	$180	—	$43.65^*
Neontiered relay router	$30.00	$180	—	$43.65^*
OpenAItiered first party lab	$30.00	$180	—	$43.65^*
OpenCode Zen relay router	$30.00	$180	$30.00	$43.65
OpenRoutertiered unknown	$30.00	$180	—	$43.65^*
Oppertiered relay router	$30.00	$180	—	$43.65^*
OrcaRoutertiered relay router	$30.00	$180	—	$43.65^*
Requesty relay router	$30.00	$180	—	$43.65^*
ZenMuxtiered relay router	$30.00	$180	—	$43.65^*
Cloudflare AI Gateway unknown	$30.00	$180	—	$43.65^*
Vercel AI Gateway unknown	$30.00	$180	—	$43.65^*
Venice AIoutlier unknown	$37.50	$225	—	$54.56^*

Cheapest (output)

Poe

$164 /M

opencode.json

{
  "provider": {
    "poe": {
      "npm": "@ai-sdk/openai-compatible",
      "options": {
        "baseURL": "https://api.poe.com/v1"
      },
      "models": {
        "openai/gpt-5.5-pro": {}
      }
    }
  }
}

Set POE_API_KEY in your environment. Generated — verify against the OpenCode docs.

Output $/M over time7-day preview

Median line, min–max band. Pre-2026-09 points are catalog-recorded dates from models.dev git history, not provider effective dates.

Full price history & dynamics

This is a 7-day preview. Sign in for 30 days free; the full series and export are the API subscription.

Data: models.dev (MIT), snapshot 2026-09-20. Prices are vendor-published; verify before purchase. Methodology.