GPT-5.6 Sol vs Claude Fable 5.2
Compare GPT-5.6 Sol and Claude Fable 5.2 side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
GPT-5.6 Sol vs Claude Fable 5.2 Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
OpenAI / GPT-5.6 Sol
maxDescription
OpenAI's flagship and the top tier of the GPT-5.6 family. Sol is built for the hardest professional work: complex coding, extensive research, computer use, and scientific work. It reads text and images across a very large context, supports web search, and its knowledge is among the most recent in the catalog. Reasoning effort can reach the highest levels for the most demanding problems. Priced at the top of OpenAI's range, and built to earn it.
Anthropic / Claude Fable 5.2
maxDescription
Anthropic's most capable model and the upgrade to Fable 5.1. Anthropic reports it is a step above Opus 5.5 in almost every area it tested, with large gains in coding and chart reading, and output up to 30% faster than Fable 5.1. It reads text, images, and files across a very large context, supports web search, and offers effort from Low to Max.
About
About
Capabilities
Capabilities
Comparison
Why Use GPT-5.6 Sol and Claude Fable 5.2?
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OpenAI / GPT-5.6 Sol
maxFrontier Agentic Coding
OpenAI positions Sol as its strongest model for coding and agentic work, achieving state-of-the-art results on terminal and real codebase benchmarks. Built for long, multi-step engineering that runs across many tool calls.
Reasoning To Highest Effort
Reasoning effort ranges from low to high, defaulting to high for the hardest problems. OpenAI reports it reaching top results while using fewer tokens than comparable models, so depth need not mean waste.
Room For Whole Projects
A very large context window, among the largest available. Load an entire codebase, a full research corpus, or a large document set and work across all of it in one request without chunking.
Professional Knowledge Work
OpenAI builds it for difficult professional work across science, research, and design, as well as coding. Suited to output that has to be right the first time rather than merely drafted.
Web Search And Recent Knowledge
Supports web search as a tool, and its knowledge is among the most recent in the catalog. Together, those cover current questions well, with the search filling anything past the training cutoff.
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 supported.
Anthropic / Claude Fable 5.2
maxTop FrontierCode Score
Anthropic reports 49.1% on FrontierCode 2.0 at Xhigh effort, up from 32.4% for Fable 5.1. That is the highest score of any released model Anthropic tested.
Effort Low To Max
Effort runs Low, Medium, High, Xhigh, and Max, with Medium as the default. At Medium, Anthropic reports it finishes hard tasks with fewer tokens than Fable 5.1.
Room For Whole Projects
A very large context window on Aymo, with room for a full codebase or a long document set. Load everything once and work across it in one session.
Expert Technical Work
Anthropic built Fable for its most ambitious, open-ended technical work. It can also act as an advisor to smaller models or hand simpler tasks to them.
Fewer Needless Refusals
Supports web search on Aymo. Anthropic reports about 55% fewer blocked legitimate requests than Fable 5.1, with similar protection against cyber and biology risks.
Text, Image, And Files
Reads text and images, plus files you upload on Aymo. On Chartography, a chart-reading test without tools, Anthropic reports 73.4%, up from 44.8% for Fable 5.1.
Why Aymo
Why chat with GPT-5.6 Sol and Claude Fable 5.2 on Aymo AI?
Aymo gives you more than access to GPT-5.6 Sol and Claude Fable 5.2—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how GPT-5.6 Sol and Claude Fable 5.2 performs alongside Claude, Gemini, Grok, and other leading AI models.
One Workspace
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Switch Models Instantly
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Upload Once
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