+
+

Related Products

  • Gemini Enterprise Agent Platform
    999 Ratings
    Visit Website
  • LTX
    182 Ratings
    Visit Website
  • JAMS Scheduler
    279 Ratings
    Visit Website
  • StackAI
    54 Ratings
    Visit Website
  • Evertune
    1 Rating
    Visit Website
  • Google AI Studio
    30 Ratings
    Visit Website
  • Retool
    593 Ratings
    Visit Website
  • Apify
    1,441 Ratings
    Visit Website
  • Checksum.ai
    1 Rating
    Visit Website
  • Fathom
    7,733 Ratings
    Visit Website

About

Claude Fable 5.1 is Anthropic’s advanced AI model for coding, knowledge work, research, and long-running agentic tasks. It is designed to improve on Claude Fable 5 with stronger performance across software engineering, scientific research, multidisciplinary reasoning, computer use, business workflows, and complex problem solving. The model can handle extended multi-step work, verify its own results, diagnose difficult software issues, and operate effectively across tool-heavy workflows. Anthropic also reduced cache-read pricing for Fable 5.1, lowering typical usage costs compared with Fable 5 and creating larger savings for highly agentic workloads. Fable 5.1 includes updated safeguards intended to reduce false positives while allowing more legitimate cybersecurity tasks such as vulnerability discovery for defensive purposes. The model is available through Claude products, the Claude API, Amazon Web Services, Google Cloud, and Microsoft Azure.

About

OpenAI's deep research is an AI-powered tool designed to autonomously conduct complex, multi-step research tasks across various domains, such as science, coding, and mathematics. By analyzing user-provided inputs—such as questions, text documents, images, PDFs, or spreadsheets—the system formulates a structured research plan, gathers relevant information, and delivers comprehensive responses within minutes. It also provides process summaries with citations, helping users verify sources. While this tool significantly accelerates research efficiency, it may occasionally produce inaccuracies or struggle to differentiate between authoritative sources and misinformation. Currently available to ChatGPT Pro users, deep research represents a step toward AI-driven knowledge discovery, with ongoing improvements planned for accuracy and response time.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Software developers, researchers, enterprises, analysts, knowledge workers, and AI application teams that need advanced coding, reasoning, research, and long-running agentic capabilities

Audience

Researchers, professionals, and knowledge workers seeking AI-powered assistance for complex, multi-step research tasks across various domains

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$10 per 1M tokens (input)
$10 per million input tokens and $50 per million output tokens
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • This feels like the model you reach for when the work is genuinely difficult. Not every task needs Fable, but for complex coding, long-horizon agents, deep research, and big messy knowledge-work projects, Fable 5.1 looks built for the hard stuff. The 1M-token context window is a huge advantage. For developers and AI power users, that means you can work across large repos, long docs, research sets, transcripts, spreadsheets, and project history without constantly chopping everything into pieces. I also like that Anthropic specifically calls out document, spreadsheet, and slide work. That makes it feel useful beyond coding alone — more like a high-end model for serious professional workflows.

Cons

  • The downside is price and complexity. Anthropic says most workloads should start with Claude Opus 5, and Fable 5.1 is better reserved for demanding reasoning or cases where Opus 5 still falls short.

Pros & Cons from Real Users

Pros

  • I just started using OpenAI’s deep research, and I’m blown away. This thing is fast, thorough, and actually useful. I threw some complicated questions at it—stuff that would normally take me hours of digging—and it came back with well-structured, cited answers in minutes. It feels like having an insanely efficient research assistant that never gets tired. The best part? It doesn’t just spit out answers; it walks you through the process. I can see how it gathered information, which sources it used, and how it connected everything. That level of transparency makes it way more trustworthy than a typical chatbot.

Cons

  • There are some hiccups. It’s not perfect at judging credibility, so I still have to double-check some sources. Occasionally, it misinterprets what I’m asking and goes off in a weird direction. But honestly, compared to the time it saves me, these are minor issues.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

OpenAI
Founded: 2015
United States
openai.com/index/introducing-deep-research/

Alternatives

Alternatives

ARI

ARI

You.com
GPT-5.6 Sol

GPT-5.6 Sol

OpenAI
Claude Research

Claude Research

Anthropic
GPT-6 Astra

GPT-6 Astra

OpenAI
DeepSeek R1

DeepSeek R1

DeepSeek
Claude Fable 5

Claude Fable 5

Anthropic
Perplexity Research

Perplexity Research

Perplexity AI
Claude Opus 5

Claude Opus 5

Anthropic

Categories

Categories

Integrations

GitHub
Bind AI
CSS
Charlie
ChatGPT Enterprise
ChatGPT Plus
Claude Cowork
Claude Pro
Claude Security
Gemini Enterprise Agent Platform
Go
GoLand
Kotlin
Microsoft 365 Copilot Analyst
Microsoft SharePoint
PowerShell
React
Snowflake
TypeScript
Use AI

Integrations

GitHub
Bind AI
CSS
Charlie
ChatGPT Enterprise
ChatGPT Plus
Claude Cowork
Claude Pro
Claude Security
Gemini Enterprise Agent Platform
Go
GoLand
Kotlin
Microsoft 365 Copilot Analyst
Microsoft SharePoint
PowerShell
React
Snowflake
TypeScript
Use AI
Claim Claude Fable 5.1 and update features and information
Claim Claude Fable 5.1 and update features and information
Claim OpenAI deep research and update features and information
Claim OpenAI deep research and update features and information