Grok 4.3

xai· 2026-04-17· 1M ctx

API onlytool callreasoningstructured quant: unknown

spread (output)

1.1×

$2.50 – $2.83 · 30 providers

30 providers priced

Provider	Input	Output	Cache rd	Blended
ZenMuxtiered relay router	$1.25	$2.50	$0.200	$0.696
Abacus relay router	$1.25	$2.50	$0.200	$0.696
AIHubMixtiered unknown	$1.25	$2.50	$0.200	$0.696
Amazon Bedrock hyperscaler	$1.25	$2.50	$0.200	$0.696
Aurikotiered relay router	$1.25	$2.50	$0.200	$0.696
Cloudflare AI Gateway unknown	$1.25	$2.50	$0.200	$0.696
CrossModeltiered relay router	$1.25	$2.50	$0.200	$0.798
DaoXE relay router	$1.25	$2.50	$0.200	$0.696
Eden AItiered relay router	$1.25	$2.50	$0.200	$0.696
FastRouter relay router	$1.25	$2.50	—	$1.36^*
FrogBot relay router	$1.25	$2.50	$0.200	$0.696
Vertextiered hyperscaler	$1.25	$2.50	$0.200	$0.696
Impossibl relay router	$1.25	$2.50	$0.200	$0.696
Kilo Gateway relay router	$1.25	$2.50	$0.200	$0.696
DevPass (LLM Gateway)tiered relay router	$1.25	$2.50	$0.200	$0.696
LLM Gatewaytiered relay router	$1.25	$2.50	$0.200	$0.696
LLM Gatewaytiered relay router	$1.25	$2.50	$0.200	$0.696
LLM Gatewaytiered relay router	$1.25	$2.50	$0.200	$0.696
Merge Gatewaytiered unknown	$1.25	$2.50	$0.200	$0.696
NanoGPT relay router	$1.25	$2.50	$0.200	$0.696
OCI Generative AItiered relay router	$1.25	$2.50	$0.200	$0.696
Ofox relay router	$1.25	$2.50	$0.200	$0.696
OpenRoutertiered unknown	$1.25	$2.50	$0.200	$0.696
Oppertiered relay router	$1.25	$2.50	$0.200	$0.696
OrcaRoutertiered relay router	$1.25	$2.50	$0.200	$0.696
Requestytiered relay router	$1.25	$2.50	$0.200	$0.798
302.AI relay router	$1.25	$2.50	—	$1.36^*
Vercel AI Gateway unknown	$1.25	$2.50	$0.200	$0.696
xAItiered first party lab	$1.25	$2.50	$0.200	$0.696
Venice AItieredoutlier unknown	$1.42	$2.83	$0.230	$0.791

Cheapest (output)

ZenMux

$2.50 /M

opencode.json

{
  "provider": {
    "zenmux": {
      "npm": "@ai-sdk/openai-compatible",
      "options": {
        "baseURL": "https://zenmux.ai/api/v1"
      },
      "models": {
        "x-ai/grok-4.3": {}
      }
    }
  }
}

Set ZENMUX_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.