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Grok 4.6 vs Grok 4.5

Grok 4.6 against the release it replaces, at an identical price and an identical 500,000-token window.

What the numbers say

Derived from the live registry Zeplik routes and bills against. Credits: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin.

Side by side

Grok 4.6

SpaceXAI

Grok 4.6 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM. It is succeeded by [Grok 4.7](/x-ai/grok-4.7).

Provider
SpaceXAI
Context window
500K tokens
Input price
24.0 credits / 1M tokens ($2.00 raw)
Output price
72.0 credits / 1M tokens ($6.00 raw)
Vision (image input)
Yes
Tool calling
Yes
Extended reasoning
No

Best for

  • Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
  • Very long documents and codebases: a 500K-token window fits entire books or repositories in one conversation
  • Working with images: screenshots, charts, photos and scanned documents alongside text
  • Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Grok 4.5

SpaceXAI

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.

Provider
SpaceXAI
Context window
500K tokens
Input price
24.0 credits / 1M tokens ($2.00 raw)
Output price
72.0 credits / 1M tokens ($6.00 raw)
Vision (image input)
Yes
Tool calling
Yes
Extended reasoning
No

Best for

  • Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
  • Very long documents and codebases: a 500K-token window fits entire books or repositories in one conversation
  • Working with images: screenshots, charts, photos and scanned documents alongside text
  • Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Try both on Zeplik

The honest answer to most model debates is to run your own prompt on both. Zeplik puts Grok 4.6 and Grok 4.5 in the same chat, so you can switch mid-conversation and compare answers on the work you actually do.

Pick a model and ask. Your prompt opens in the Zeplik app with that model selected.

Model to ask

Frequently asked questions

What is the difference between Grok 4.6 and Grok 4.5?
Output pricing is close: 72.0 vs 72.0 credits per 1M tokens. Both take the same 500K-token context window. Grok 4.6 is the newer release (August 2026 vs July 2026).
Is Grok 4.6 or Grok 4.5 cheaper?
They cost the same on output tokens: 72.0 credits per million each. 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin.
Which has the larger context window, Grok 4.6 or Grok 4.5?
Neither: both take 500K tokens.
Can I use both Grok 4.6 and Grok 4.5 on Zeplik?
Yes. Zeplik is a multi-model chat, so both sit behind one account and you can switch between them mid-conversation to compare answers on your own prompt.
Do Grok 4.6 and Grok 4.5 need a paid plan?
Both need a paid plan (Plus or above). Usage is then billed in credits from your monthly allowance.

Related comparisons

Grok 4.6 detailsGrok 4.5 detailsAll comparisons

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