Grok 4.3
ChatNot available
Latest Grok model with 1M context and unlimited output. Fast reasoning with strong agentic capabilities.
- Context
- 1Mtokens
- Max output
- Unlimitedtokens
- Latency
- ~15ms
- Released
- 2026-04-30
Pricing
$ / 1M tokensInput
$1.25/M
Output
$2.50/M
Cache Read
$0.20/M
Cache Write
$1.25/M
Capabilities
3 listed- Chat
- Tool Use
- Coding
Code examples
POST /v1/chat/completionspython
from openai import OpenAI
client = OpenAI(
api_key="your_api_key",
base_url="https://api.modelstack.cc/v1",
)
response = client.chat.completions.create(
model="grok-4.3",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)Related models
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Frequently asked questions
How is Grok 4.3 billed on ModelStack?expand_more
ModelStack bills based on actual request usage. Input, output, cache, and any other applicable rates follow the live pricing table on this page. Final request costs are available in the console.
What are the context window and maximum output for Grok 4.3?expand_more
Grok 4.3 has a 1M context window and supports up to Unlimited of output.
How can I call Grok 4.3 through ModelStack?expand_more
Use the model ID `grok-4.3` with any OpenAI-compatible SDK pointed at the ModelStack API — see the code examples above for Python, Node.js, and cURL.
Which capabilities does Grok 4.3 support?expand_more
Grok 4.3 supports: Chat, Tool Use, Coding.