xAI model / exact route

Use Grok 4.5 for demanding code and reasoning work

Grok 4.5 is xAI’s current flagship model for coding, reasoning, and general tasks. This page keeps every request on the exact Grok 4.5 route so you can evaluate it without an automatic model swap.

Try Grok 4.5View pricing

Search intent: Grok 4.5 model facts and an exact-model online console

01 / Model facts

Live route, not a frozen price card.

The provider directory supplies the mutable facts below. Official xAI documentation supplies model positioning; this page does not infer benchmark leadership.

Current route factsChecking directory
Model route
x-ai/grok-4.5
Provider context
500K
Input / 1M
$2.00
Output / 1M
$6.00

Price, provider context, and availability are read from the site's current OpenRouter-backed model directory. They may change.

02 / Good fit

Choose the model for a concrete job.

01

Architecture decisions

Compare system boundaries, migration paths, and operational tradeoffs when the answer needs more than a quick code completion.

02

Complex refactors

Turn a bounded code excerpt and constraints into a staged refactor plan with explicit checks and rollback points.

03

High-stakes review

Ask for correctness, security, and failure-mode analysis when review depth matters more than minimizing model cost.

03 / Console limits

Model capability and site access are different.

  • This Console sends text chat only. It does not expose file upload, Web or X Search, MCP, or tool execution.
  • A conversation is capped at 100,000 characters and a response at 4,096 tokens, so this interface does not expose the model’s full provider context window.
  • Advanced models require a signed-in account with credits. Price, context, and route availability are read from the current model directory.

04 / Online Console

Try Grok 4.5 on its exact route.

This selector is fixed to x-ai/grok-4.5. A stored preference cannot replace it.

Grok PlaygroundxAI models via OpenRouter
Cached catalog
xAI model
Grok 4.5 Fixed
Context

500K

Input / 1M

4,000 cr

Output / 1M

12,000 cr

Free questions3 / 3
Credit balance0 cr
View pricing

Grok 4.5 ready

Ask about code, architecture, debugging, or the Grok Build source.

Ask three questions free as a guest. Sign in to keep your account balance, then add credits when advanced models become available.

Enter to sendShift + Enter for line0/12000
Conversations stay private to this browser until you clear them.Three free questions. Credits unlock advanced models.

05 / Compare

Compare the current Grok routes.

Provider context is capacity, not a recommendation to send everything. Use the smallest relevant input and choose by task.

ModelProvider contextInput / 1MOutput / 1MRoute
Grok 4.5500K$2.00$6.00Cached
Grok 4.202M$1.25$2.50Cached
Grok 4.31M$1.25$2.50Cached
Grok Build model guide Credits and pricing

06 / FAQ

Grok 4.5 questions, answered precisely.

Sources & ownership

Independent interface, named sources.

Grok Building is an independent developer guide and interface. It is not an official xAI product. Model access on this site is provided through OpenRouter.