Claude Opus 5.5 vs GPT-4o Mini
Compare Claude Opus 5.5 and GPT-4o Mini side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
Claude Opus 5.5 vs GPT-4o Mini Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
Anthropic / Claude Opus 5.5
maxDescription
Anthropic's newest flagship, and the first in its Claude 5.5 family. Anthropic positions Opus 5.5 to perform at the level of its most capable model on most work, while costing meaningfully less to run than the previous Opus. It reads text and images, holds a very large context, and reasons before every answer with adjustable effort. Anthropic calls it their daily driver for serious coding, computer use, and knowledge work, with its knowledge current to mid-2026.
OpenAI / GPT-4o Mini
lightDescription
OpenAI's older small model was built for fast, cheap, focused tasks. GPT-4o Mini reads text and images and handles classification, extraction, translation, and short-form generation well. It is affordable and reliable for simple work, but it is now several generations old, with a modest feature set and outdated knowledge. OpenAI itself recommends newer small models for anything demanding.
About
About
Capabilities
Capabilities
Comparison
Why Use Claude Opus 5.5 and GPT-4o Mini?
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Anthropic / Claude Opus 5.5
maxDaily-Driver Coding
Anthropic positions it as its everyday model for serious coding and agentic work, reaching its most capable model's level on most tasks. Built for real software engineering across many steps rather than isolated snippets.
Adaptive Thinking Always On
Reasoning is always on, with an effort dial rather than an off switch, defaulting to medium. Anthropic reports medium effort here, matching the previous Opus at high, so it thinks efficiently rather than at length.
Room For Whole Projects
A very large context window with no smaller default. Anthropic reports stronger long-context management, so instruction following and reasoning hold across a full codebase or a long agent run.
Precise Document Work
Anthropic's strongest Opus for vision and document work: dense filings, charts, screenshots, and diagrams read at high fidelity. It also writes more concisely than the previous Opus, a deliberate change.
Deep Computer Use
Anthropic reports that its best Opus is for computer use, handling multi-step tasks that span several applications and require planning and judgment. Suited to agentic work that operates real software, not just answering questions.
Text And Image Input
Reads text, images, and PDFs in the same prompt, so you can send screenshots, filings, diagrams, or charts alongside your question. Output is text only. Audio and video are not accepted.
OpenAI / GPT-4o Mini
lightLightweight Coding Tasks
Suited to simple, well-scoped coding help, such as small scripts and quick fixes. Not built for complex engineering, OpenAI now points to newer small models for anything beyond focused tasks.
No-Reasoning Answers
A fast model with no reasoning step, so it answers directly rather than deliberating. Reliable on straightforward instructions, and less suited to multi-step problems that need worked-through logic.
A Modest Context Window
Handles a smaller window than current models, enough for everyday documents and conversations but not the large codebases or long document sets that newer models take in one pass.
Structured Short-Form Output
Strong at extracting structured data and drafting short content like email replies from thread history. Built for focused, repetitive text work rather than long-form or polished writing.
Analysis On Older Knowledge
Its training data is well behind current models, so it is fine for processing text you supply but weak on recent events, which need live sources rather than the model's own knowledge.
Text And Image Input
Reads text and images, so you can send screenshots or scanned pages alongside your prompt. Output is text only. OpenAI states audio and video are not supported.
Why Aymo
Why chat with Claude Opus 5.5 and GPT-4o Mini on Aymo AI?
Aymo gives you more than access to Claude Opus 5.5 and GPT-4o Mini—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how Claude Opus 5.5 and GPT-4o Mini performs alongside Claude, Gemini, Grok, and other leading AI models.
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