Claude Sonnet 4.5

anthropic· 2025-09-29· 200K ctx

API onlytool callreasoningstructured quant: unknown

spread (output)

7.0×

$2.14 – $15.00 · 10 providers

10 providers priced · 1 omitted (stale)

Provider	Input	Output	Cache rd	Blended
QiHang relay router	$0.430	$2.14	—	$0.586^*
Jiekou.AI relay router	$2.70	$13.50	—	$3.68^*
Anthropic first party lab	$3.00	$15.00	$0.300	$2.68
Helicone relay router	$3.00	$15.00	$0.300	$2.68
302.AI relay router	$3.00	$15.00	—	$4.09^*
LLM Gateway relay router	$3.00	$15.00	$0.300	$2.68
LLM Gateway relay router	$3.00	$15.00	$0.300	$2.68
Merge Gateway unknown	$3.00	$15.00	$0.300	$2.68
NanoGPTstale relay router	$3.00	$15.00	$0.300	$2.37
DevPass (LLM Gateway) relay router	$3.00	$15.00	$0.300	$2.68
Abacus relay router	$3.00	$15.00	—	$4.09^*

Cheapest (output)

QiHang

$2.14 /M

opencode.json

{
  "provider": {
    "qihang-ai": {
      "npm": "@ai-sdk/openai-compatible",
      "options": {
        "baseURL": "https://api.qhaigc.net/v1"
      },
      "models": {
        "claude-sonnet-4-5-20250929": {}
      }
    }
  }
}

Set QIHANG_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.