GPT-5.5 vs Claude Sonnet 5
Compare GPT-5.5 and Claude Sonnet 5 side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
GPT-5.5 vs Claude Sonnet 5 Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
OpenAI / GPT-5.5
maxDescription
OpenAI's frontier model is built for complex professional work. GPT-5.5 takes on demanding coding, deep reasoning, and analysis across very large inputs. It reads text and images, searches the web for current information, and lets you dial its reasoning effort up or down depending on how hard the problem is. Priced at the premium end of OpenAI's range, and built to earn it.
Anthropic / Claude Sonnet 5
maxDescription
The all-rounder in the Claude family, and a sensible default for most work. Sonnet 5 codes, writes, and analyses across the same ground as the flagship, reads images and documents, and holds the same very large context. It is faster and costs less. It gives up ground only on problems difficult enough to need the flagship.
About
About
Capabilities
Capabilities
Comparison
Why Use GPT-5.5 and Claude Sonnet 5?
Aymo gives you more than access to individual models—it provides a complete multi-model AI workspace designed for productivity.
OpenAI / GPT-5.5
maxFrontier-Level Coding
OpenAI positions this as its model for the most complex professional work, with coding as the headline use. Handles large codebases, multi-step engineering tasks, and production-quality output.
Highest-Rated Reasoning
OpenAI's own model documentation rates its reasoning Highest, the top of the scale. Reasoning tokens are supported, so the model thinks before it answers, and you control how much thinking it does.
Large Context Window
1,050,000 tokens, among the largest available anywhere. Load an entire codebase, a full research corpus, or a large document set and ask questions across all of it. Prompts above 272,000 input tokens are billed at a higher rate.
Long-Form Professional Writing
Built for output that ships, not quick drafts. Writes up to 128,000 tokens in a single response, which covers long reports, full documentation sets, and extended technical writing without splitting the job up.
Live Web Research
Web search is a supported tool, so it can pull current information into an answer rather than working only from what it was trained on. Its knowledge cutoff is 1 December 2025, so anything more recent needs that search.
Text & Image Input
Reads text and images. OpenAI's documentation lists image as input-only and states that audio and video are not supported. File search is supported, so it can work across uploaded documents.
Anthropic / Claude Sonnet 5
maxCoding Assistance
Strong. Writes, debugs, reviews, and explains code across languages. Covers most coding work. Genuinely hard problems are where it starts to show strain.
Reasoning & Problem Solving
Strong. Works through multi-step problems and shows its reasoning. Reliable on anything with a findable answer.
Document & File Understanding
Best-in-class. A one-million-token context window, roughly 750,000 words. Load a full document set and ask questions across it without splitting it up.
Writing & Content Creation
Strong. Emails, reports, articles, documentation. Output that needs editing rather than rewriting, up to 128,000 tokens in a single response.
Research & Analysis
Strong. Compares, summarises, and pulls out what matters across your sources. Reliable on routine analysis.
Multimodal Support
Text and images. Anthropic's documentation lists text and image input for all current Claude models. Audio and video input are not listed. Reads PDFs, spreadsheets, contracts, and code files.
Why Aymo
Why chat with GPT-5.5 and Claude Sonnet 5 on Aymo AI?
Aymo gives you more than access to GPT-5.5 and Claude Sonnet 5—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how GPT-5.5 and Claude Sonnet 5 performs alongside Claude, Gemini, Grok, and other leading AI models.
One Workspace
Keep all your AI conversations, files, and prompts in a single organized workspace.
Switch Models Instantly
Move between different AI models without restarting your conversation.
Upload Once
Use the same files across multiple AI models without uploading them again.
Save & Organize
Bookmark important chats, organize projects, and return anytime.
Work Together
Share conversations and collaborate with teammates in one place.