GPT-5 Chat (latest)

openai· 2025-08-07· 400K ctx

API onlyreasoningstructured quant: unknown

spread (output)

1.1×

$9.00 – $10.00 · 5 providers

5 providers priced

Provider	Input	Output	Cache rd	Blended
Jiekou.AI relay router	$1.13	$9.00	—	$1.84^*
Poe relay router	$1.10	$9.00	$0.110	$1.19
Helicone relay router	$1.25	$10.00	$0.125	$1.33
Merge Gateway unknown	$1.25	$10.00	$0.125	$1.33
OrcaRouter relay router	$1.25	$10.00	$0.125	$1.33

Cheapest (output)

Jiekou.AI

$9.00 /M

opencode.json

{
  "provider": {
    "jiekou": {
      "npm": "@ai-sdk/openai-compatible",
      "options": {
        "baseURL": "https://api.jiekou.ai/openai"
      },
      "models": {
        "gpt-5-chat-latest": {}
      }
    }
  }
}

Set JIEKOU_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.