How do I use the xAI API?

Create a Token Harbor key and call the OpenAI-compatible endpoint https://tokenharbor.ai/v1 (or the Anthropic endpoint https://tokenharbor.ai). One key gives you every xAI model plus hundreds of others — no separate xAI account required.

How much does the xAI API cost?

xAI models on Token Harbor start at $0.20 per 1M input tokens, pay-as-you-go with no subscription.

xAI API

Get a xAI API key and call every xAI model (Grok) through Token Harbor with a single key — pay-as-you-go, no separate xAI account or console. Fully OpenAI- and Anthropic-compatible, with transparent per-token pricing and smart routing. See xAI API pricing per model below.

Call it with one key

curl https://tokenharbor.ai/v1/chat/completions \
  -H "Authorization: Bearer $TOKENHARBOR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"x-ai/grok-4-fast","messages":[{"role":"user","content":"Hello"}]}'

Get a free key at /dashboard/api-keys · point any tool at us with the Connect CLI or manual setup.

xAI models (4)

Model	Context	$/1M in · out
Grok 4 Fast`x-ai/grok-4-fast`	2M	$0.20 · $0.50
Grok 4.3`x-ai/grok-4.3`	1M	$1.25 · $2.50
Grok 4.5`x-ai/grok-4.5`	500k	$2.00 · $6.00
Grok 4`x-ai/grok-4`	256k	$3.00 · $15.00

See the full model catalog or read the API docs.

xAI API

Call it with one key

curl https://tokenharbor.ai/v1/chat/completions \
  -H "Authorization: Bearer $TOKENHARBOR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"x-ai/grok-4-fast","messages":[{"role":"user","content":"Hello"}]}'

Get a free key at /dashboard/api-keys · point any tool at us with the Connect CLI or manual setup.

xAI models (4)

Model	Context	$/1M in · out
Grok 4 Fast`x-ai/grok-4-fast`	2M	$0.20 · $0.50
Grok 4.3`x-ai/grok-4.3`	1M	$1.25 · $2.50
Grok 4.5`x-ai/grok-4.5`	500k	$2.00 · $6.00
Grok 4`x-ai/grok-4`	256k	$3.00 · $15.00

See the full model catalog or read the API docs.