GPT-5.4 vs Claude Opus 4.8
Compare GPT-5.4 and Claude Opus 4.8 side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
GPT-5.4 vs Claude Opus 4.8 Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
OpenAI / GPT-5.4
maxDescription
OpenAI describes GPT-5.4 as its more affordable model for coding and professional work. It carries OpenAI's top reasoning rating, a million-token context window, and web search. The trade is speed and freshness: it runs at medium speed and its knowledge stops in August 2025. Strong value when the work is hard but not urgent.
Anthropic / Claude Opus 4.8
maxDescription
Anthropic's flagship is built for work that other models get wrong. Opus 4.8 takes on the hardest coding, the deepest analysis, and writing that has to be right first time. It reads images and documents, holds a very large amount of context at once, and works through problems step by step so you can follow its logic. Slower and more expensive than lighter models, by design.
About
About
Capabilities
Capabilities
Comparison
Why Use GPT-5.4 and Claude Opus 4.8?
Aymo gives you more than access to individual models—it provides a complete multi-model AI workspace designed for productivity.
OpenAI / GPT-5.4
maxAffordable Frontier Coding
OpenAI positions this squarely as its cheaper route into complex coding and professional work. Handles large codebases and multi-step engineering tasks with reasoning effort you can push from none up to xhigh when a problem demands it.
Better Reasoning at Lower Price
OpenAI rates its reasoning Highest, the top of the company's own scale, at half the price of its newest frontier model. Reasoning tokens are supported, and effort defaults to none, so you decide when the model thinks hard.
One Million Context Tokens
A 1,050,000-token context window. Load a full codebase, a research corpus, or a large document set and work across all of it in one session. Prompts above 272,000 input tokens are billed at a higher rate.
Extended Professional Writing
Writes up to 128,000 tokens in a single response, enough for long reports, complete documentation sets, and extended technical writing without breaking the job into parts.
Web Search Support
Web search is a supported tool, so it can ground answers in live sources. Its knowledge cutoff is 31 August 2025, which is older than most frontier models, so recent events genuinely need that search rather than merely benefiting from it.
Reads Text and Images
Text and image input, text output. OpenAI's documentation states plainly that audio and video are not supported. File search is supported, so it can work across uploaded documents.
Anthropic / Claude Opus 4.8
maxCoding Assistance
Best-in-class. Handles large refactors, subtle bugs, and unfamiliar codebases. Built for the code that defeats lighter models, not routine changes.
Reasoning & Problem Solving
Best-in-class. Works through multi-step problems in the open, showing its reasoning as it goes. Strongest where the answer is not obvious.
Document & File Understanding
Best-in-class. A one-million-token context window, roughly 750,000 words. Load a full contract set, research folder, or codebase and ask questions across all of it.
Writing & Content Creation
Best-in-class. Professional output that needs editing rather than rewriting. Holds tone and structure across long pieces, up to 128,000 tokens in a single response.
Research & Analysis
Best-in-class. Reads dense, contradictory, or ambiguous material and forms a judgment. The strongest choice when the analysis itself is the hard part.
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-5.4 and Claude Opus 4.8 on Aymo AI?
Aymo gives you more than access to GPT-5.4 and Claude Opus 4.8—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how GPT-5.4 and Claude Opus 4.8 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.