Grok 4.5

Grok 4.5 is xAI's model for chat, coding, agentic tools, and lower hallucination risk. It is part of the grok line, succeeding Grok 4.3. It has a context window of 500,000 tokens and a max output of 500,000 tokens. It is not open weights. It supports reasoning mode and tool calling. It accepts image, PDF, and text inputs, and returns text. Pricing starts at $2.00 per million input tokens and $6.00 per million output tokens, with cached input at $0.30 per million tokens.

Against Grok 4.3: window 1M to 500K, input $1.25 to $2.00, output $2.50 to $6.00, cached input $0.20 to $0.30.

• ·Lower hallucination risk
• ·Supports reasoning mode
• ·Supports tool calling
• ·Accepts image, PDF, and text
• ·500k token context and output

• Reach for it for chat and coding
• Reach for it for agentic tool use
• Reach for it for tasks needing lower hallucination risk

24 hosts serve this model at the price above · the maker's documentation

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

What is the context window?

The context window is 500,000 tokens, with a max output of 500,000 tokens.

What is the pricing?

Input costs from $2.00 per million tokens, output from $6.00 per million, and cached input at $0.30 per million.

What input types does it accept?

It accepts image, PDF, and text inputs, and returns text.