Grok 4.5

impossibl/xai/grok-4.5 · family grok · price provider-declared (via models.dev), USD per 1M tokens. Capabilities: toolsreasoningtextimage.

$3.00Blended $/1M (3:1)

$2Input $/1M

$6Output $/1M

$8.001M in + 1M out

$0.3 −85%Cache read $/1M

#4262 of 5,000Cheapest rank

Provider: Impossibl (impossibl)
Context: 500,000 tokens
Max output: 500,000 tokens
Capabilities: toolsreasoningtextimage

Same model, other providers

“Grok 4.5” is offered by 9 providers — cheapest-effective first. Kenari is the cheapest at $0.00 blended.

Provider	Input	Output	Blended	Context
Kenari	free	free	$0.00	500k
Impossibl (this)	$2	$6	$3.00	500k
CrossModel	$2	$6	$3.00	500k
OpenCode Go	$2	$6	$3.00	500k
NanoGPT	$2	$6	$3.00	500k
DaoXE	$2	$6	$3.00	500k
LLM Gateway	$2	$6	$3.00	500k
OpenCode Zen	$2	$6	$3.00	500k
GitHub Copilot	$2	$6	$3.00	500k

Call it

jishie indexes & prices models; it does not proxy inference. Most providers are OpenAI-compatible — point base_url at Impossibl and pass this model id:

curl $BASE_URL/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" -H "Content-Type: application/json" \
  -d '{"model":"xai/grok-4.5","messages":[{"role":"user","content":"hello"}]}'

Route programmatically with MCP find_model / get_model, or fetch this record free (no wallet):