Grok 4.5 vs Claude Opus 5
Compare Grok 4.5 and Claude Opus 5 side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
Grok 4.5 vs Claude Opus 5 Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
xAI / Grok 4.5
proDescription
xAI's frontier model, built for coding, agentic tasks, and knowledge work rather than conversation. Grok 4.5 reads text and images, searches both the web and X, and lets you set how hard it thinks before answering. Its knowledge runs to February 2026, unusually recent. The tradeoff is context: its window is half the size of the previous Grok generation.
Anthropic / Claude Opus 5
maxDescription
Anthropic's newest Opus model, and the successor to Opus 4.8. Opus 5 reaches near-frontier intelligence at the same price as the model it replaces, and lets you set how hard it works per task. It reasons before answering by default, checks its own output, and reads text and images across a very large context. Built for long-horizon coding and agentic work that runs with little supervision.
About
About
Capabilities
Capabilities
Comparison
Why Use Grok 4.5 and Claude Opus 5?
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xAI / Grok 4.5
proCoding and Agentic Tasks
xAI was built specifically for coding and agentic tasks, trained on new datasets spanning science, engineering, and maths. Aimed at multi-file work across repositories.
Reasoning Effort You Control
Reasoning runs at low, medium, or high, so you decide how much thinking each request gets. Function calling and code execution are supported, which is what agentic work actually depends on.
A Mid-Size Context Window
Handles 500,000 tokens, roughly 375,000 words. Comfortable for large codebases and long document sets, though half the window the previous Grok generation offered, so whole-monorepo work may not fit.
Knowledge Work and Documents
xAI positions it for knowledge work alongside coding, which means long documents, structured reasoning, and the kind of writing that has to survive review rather than just read well.
Web Search and X Search
xAI states plainly that Grok knows nothing beyond its training data, and provides server-side Web Search and X Search tools to fix that. X Search is unique to this model.
Text and Image Input
Reads text and images, in jpg or png, in any order alongside your prompt. Send screenshots, diagrams, or scanned pages. Audio and video are not listed as supported inputs.
Anthropic / Claude Opus 5
maxSelf-Verifying Coding
Anthropic's strongest coding model. It produces code with minimal oversight, then checks its own work, catching and fixing its own mistakes before handing the result back rather than waiting to be corrected.
Effort You Set
A per-task effort dial from low to high. Low returns faster and cheaper on simple work; high lets the model reason as long as a hard problem needs. Thinking is on by default.
Consistent Full-Window Context
A very large context window with no smaller default. Anthropic states instruction following, tool calling, and reasoning stay consistent across the whole window, which matters for large codebases and long agent runs.
Enterprise Knowledge Work
Built for high-stakes enterprise and knowledge work. Suited to tasks where the output has to be right the first time rather than merely drafted, alongside its coding and agentic strengths.
Long-Horizon Agentic Work
Carries multi-step tasks through to completion with limited supervision, filling gaps in incomplete instructions, testing as it goes, and recovering from its own errors without a nudge.
Text And Image Input
Reads text and images in the same prompt, so you can send screenshots, diagrams, or scanned pages alongside your question. Output is text only. Audio and video are not accepted.
Why Aymo
Why chat with Grok 4.5 and Claude Opus 5 on Aymo AI?
Aymo gives you more than access to Grok 4.5 and Claude Opus 5—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how Grok 4.5 and Claude Opus 5 performs alongside Claude, Gemini, Grok, and other leading AI models.
One Workspace
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Upload Once
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