grok-4.5Grok 4.5 is xAI's newest flagship model, leading the industry in coding, non-hallucination rate, agentic tool calling, and instruction following. It supports both non-reasoning and reasoning modes and a 500K-token context window. Served via the OpenAI-compatible /v1/chat/completions endpoint (call the grok- model there; the Anthropic /v1/messages format is not used on our side). Priced 60% below xAI official: $0.8 input / $2.4 output per 1M tokens (official $2.00 / $6.00). Failed requests are not billed.
Leads on coding, non-hallucination rate, agentic tool calling and instruction following
Supports both modes; 500K-token context window
$0.8 input / $2.4 output per 1M vs xAI official $2.00 / $6.00
Call via /v1/chat/completions (model = grok-4.5), streaming + tool calling
View complete API reference with all parameters and examples.
View complete API reference with streaming, thinking, and more.
Billing: Cost = (input_tokens * input_price + output_tokens * output_price) / 1,000,000
Grok 4.5 is a Large Language Model API provided by xAI. Grok 4.5 is xAI's newest flagship model, leading the industry in coding, non-hallucination rate, agentic tool calling, and instruction following. It supports both non-reasoning and reasoning modes and a 500K-token context window. Served via the OpenAI-compatible /v1/chat/completions endpoint (call the grok- model there; the Anthropic /v1/messages format is not used on our side). Priced 60% below xAI official: $0.8 input / $2.4 output per 1M tokens (official $2.00 / $6.00). Failed requests are not billed. Through API Models platform, you can access this model via a unified API with transparent pay-as-you-go pricing. Current pricing: Input: $0.8, Output: $2.4 per 1M tokens.
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Grok 4.5 is available through API Models at: Input: $0.8, Output: $2.4 per 1M tokens. Billing is pay-as-you-go — you only pay for what you generate.
Sign up at API Models, get your API key, and call our unified API endpoint. We provide detailed API documentation with code examples in cURL, Python, and Node.js.
API Models offers the same Grok 4.5 model through our aggregation platform. We provide a unified API interface so you do not need separate accounts for each provider - one API key to access all models.
Grok 4.5 is xAI's newest flagship model, leading the industry in coding, non-hallucination rate, agentic tool calling, and instruction following. It supports both non-reasoning and reasoning modes with a 500K-token context window. On API Models you call it via the OpenAI-compatible /v1/chat/completions endpoint (model = "grok-4.5") — point your existing OpenAI SDK at our base_url and it works as-is.
$0.8 input / $2.4 output per 1M tokens — 60% below xAI official ($2.0 input / $6.0 output), a flat 60% off on both. Pay-as-you-go with only successful requests billed, one API key for every model (Grok, Claude, Gemini, GPT…), reachable from China with no verification.
Yes — verified live. Pass the standard OpenAI tools / tool_choice fields and the model returns a standard tool_calls response; tool_choice supports auto / required / a named function. This is its headline agentic tool-calling capability, so existing OpenAI function-calling code works unchanged.
On API Models, Grok 4.5 runs alongside 60+ models on one API key and one balance, so choosing is about fit, not lock-in. It supports Flagship, Coding SOTA, Agentic Tool Calling, 500K Context, and you can weigh it on price and capability against other Large Language Model models, then switch by changing a single model-name string — no new account or integration. Browse every Large Language Model option with live pricing at apimodels.app/models.
Grok 4.5 supports: Flagship, Coding SOTA, Agentic Tool Calling, 500K Context. See the API Models docs for full parameters and call examples.
Yes. API Models exposes Grok 4.5 through a single unified API and one key — no separate provider accounts, and no need to handle each provider's regional network access yourself.
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