openai/gpt-5.1-thinking-fast

openai· 400K ctx

API onlytool callreasoning quant: unknown

spread (output)

2.0×

$10.00 – $20.00 · 2 providers

2 providers priced

Provider	Input	Output	Cache rd	Blended
Vercel AI Gateway unknown	$1.25	$10.00	$0.125	$1.33
Vercel AI Gateway unknown	$2.50	$20.00	$0.250	$2.66

Cheapest (output)

Vercel AI Gateway

$10.00 /M

opencode.json

{
  "provider": {
    "vercel": {
      "npm": "@ai-sdk/gateway",
      "models": {
        "openai/gpt-5.1-thinking": {}
      }
    }
  }
}

Set AI_GATEWAY_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.