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Grok Build 0.1 vs Claude Sonnet 5

A coding specialist against the general flagship engineers most often reach for.

Figures as of , read live from the model registry Zeplik bills against.

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 Build 0.1

SpaceXAI

Grok Build 0.1 is SpaceXAI’s fast coding model trained specifically for agentic software engineering workflows.

Provider
SpaceXAI
Context window
256K tokens
Input price
12.0 credits / 1M tokens ($1.00 raw)
Output price
24.0 credits / 1M tokens ($2.00 raw)
Vision (image input)
Yes
Tool calling
Yes
Extended reasoning
No

Best for

  • Writing, reviewing and refactoring code; agentic coding workflows
  • Long documents: the 256K-token window holds lengthy reports, contracts or papers whole
  • 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

Claude Sonnet 5

Anthropic

Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work.

Provider
Anthropic
Context window
1M tokens
Input price
24.0 credits / 1M tokens ($2.00 raw)
Output price
120 credits / 1M tokens ($10.00 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 1M-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 Build 0.1 and Claude Sonnet 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 Build 0.1 and Claude Sonnet 5?
Grok Build 0.1 is about 5.0x cheaper on output tokens (24.0 vs 120 credits per 1M). Claude Sonnet 5 takes noticeably more context: 1M vs 256K tokens. Claude Sonnet 5 is the newer release (June 2026 vs May 2026).
Is Grok Build 0.1 or Claude Sonnet 5 cheaper?
Grok Build 0.1 is cheaper: 24.0 credits per million output tokens against 120. 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin.
Which has the larger context window, Grok Build 0.1 or Claude Sonnet 5?
Claude Sonnet 5, at 1M tokens against 256K.
Can I use both Grok Build 0.1 and Claude Sonnet 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 Build 0.1 and Claude Sonnet 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 Build 0.1 detailsClaude Sonnet 5 detailsAll comparisons

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