Claude Opus 5.5 vs Grok 4.7
The two newest flagships in the catalogue, a day apart: Opus 5.5 doubles Grok 4.7's context and asks roughly four times as much per output token.
What the numbers say
- Grok 4.7 is about 3.3x cheaper on output tokens (72.0 vs 240 credits per 1M).
- Claude Opus 5.5 takes noticeably more context: 1M vs 500K tokens.
- Claude Opus 5.5 is the newer release (September 2026 vs September 2026).
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
Claude Opus 5.5
Anthropic
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.
- Provider
- Anthropic
- Context window
- 1M tokens
- Input price
- 48.0 credits / 1M tokens ($4.00 raw)
- Output price
- 240 credits / 1M tokens ($20.00 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
Grok 4.7
SpaceXAI
Grok 4.7 is SpaceXAI's flagship model for coding, agentic tasks, and knowledge work, succeeding Grok 4.6.
- 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 Claude Opus 5.5 and Grok 4.7 in the same chat, so you can switch mid-conversation and compare answers on the work you actually do.
Frequently asked questions
- What is the difference between Claude Opus 5.5 and Grok 4.7?
- Grok 4.7 is about 3.3x cheaper on output tokens (72.0 vs 240 credits per 1M). Claude Opus 5.5 takes noticeably more context: 1M vs 500K tokens. Claude Opus 5.5 is the newer release (September 2026 vs September 2026).
- Is Claude Opus 5.5 or Grok 4.7 cheaper?
- Grok 4.7 is cheaper: 72.0 credits per million output tokens against 240. 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin.
- Which has the larger context window, Claude Opus 5.5 or Grok 4.7?
- Claude Opus 5.5, at 1M tokens against 500K.
- Can I use both Claude Opus 5.5 and Grok 4.7 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 Claude Opus 5.5 and Grok 4.7 need a paid plan?
- Both need a paid plan (Plus or above). Usage is then billed in credits from your monthly allowance.
Related comparisons
- Claude Opus 5.5 vs Claude Opus 5The rare upgrade with nothing to weigh: Opus 5.5 is newer than Opus 5 and twenty percent cheaper on both input and output, at the same million-token window.
- GPT-6 Sol vs Grok 4.7Two September flagships a day apart: Grok 4.7 undercuts GPT-6 Sol by half on output, and GPT-6 Sol answers with twice the context window.
- Claude Opus 5.5 vs GPT-6 AstraAnthropic's and OpenAI's deep-reasoning flagships, eighteen days apart -- and Astra asks two and a half times Opus 5.5's price for a window only five percent larger.
- Grok 4.7 vs Grok 4.6The newest Grok against the one it replaces: twenty percent cheaper on both input and output, with the same 500,000-token window.
- Claude Opus 5.5 vs GPT-6 SolBoth shipped on the same day at adjacent tiers: whether Opus 5.5's depth is worth double GPT-6 Sol's price when their context windows are within five percent of each other.
- Grok 4.7 vs Claude Sonnet 5Grok 4.7 answers for roughly half Sonnet 5's output price; Sonnet 5 answers with twice the context. The trade is unusually clean.
Explore Zeplik
- 467 AI skillsReady-to-run expert methods that run on Claude Opus 5.5, Grok 4.7 or any other model.
- 997 integrationsConnect Gmail, Slack, GitHub, Notion and hundreds more so the assistant can work in your apps.
- Simple pricingPlus, Pro and Max plans with a monthly credit allowance that works across every model.