Grok 4.5 vs Grok Build 0.1
xAI's generalist flagship against its own coding specialist.
What the numbers say
- Grok Build 0.1 is about 3.0x cheaper on output tokens (22.0 vs 66.0 credits per 1M).
- Grok 4.5 takes noticeably more context: 500K vs 256K tokens.
- Grok 4.5 is the newer release (July 2026 vs May 2026).
Derived from the live registry Zeplik routes and bills against. Credits: 1 credit = $0.10, raw provider rate with a 1.10x margin.
Side by side
Grok 4.5
xAI
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
- Provider
- xAI
- Context window
- 500K tokens
- Input price
- 22.0 credits / 1M tokens ($2.00 raw)
- Output price
- 66.0 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 Build 0.1 is xAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding...
- Provider
- xAI
- Context window
- 256K tokens
- Input price
- 11.0 credits / 1M tokens ($1.00 raw)
- Output price
- 22.0 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
Try both on Zeplik
The honest answer to most model debates is to run your own prompt on both. Zeplik puts Grok 4.5 and Grok Build 0.1 in the same chat, so you can switch mid-conversation and compare answers on the work you actually do.