Haiku & Sonnet 4.5
Haiku 4.5 remains a lightweight option; Sonnet has moved through later versions.
One Model Family · One Curated Home
Claude on GlobalGPT
Start with Claude Fable 5.1 for coding and knowledge work. Compare Sonnet, Opus and Haiku for your task, and explore practical guides and prompts.
Choose Your Starting PointClaude Fable 5.1
Curated by GlobalGPT Review Team
Anthropic’s Claude Models, Together in GlobalGPT.
GlobalGPT is a multi-model subscription workspace. Claude model access here is separate from a Claude.ai subscription, Claude Code and Anthropic API billing; available tools and limits depend on the route you use.
4Model Starting Points
6Guide Topics
4Prompt & Workflow Paths
A Selected Path Through the Claude Family.
Selected generations for context, with Fable 5.1 featured first in the current model choices. Earlier Claude options remain available for different workloads.
Sonnet & Opus 4.6
Background for older coding and document workflows.
Sonnet 5
A current option for writing, analysis and coding.
Opus 5
A current option for demanding reasoning and professional coding.
Fable 5.1
The featured Claude model for coding and knowledge work. Explore its capabilities and available access routes.
Fable, Sonnet, Opus or Haiku: Choose Your Starting Point.
Start with Fable 5.1, or compare the other Claude options for your task. Task-fit suggestions are editorial guidance; tools and limits depend on your access route.
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Latest featured model · Available on GlobalGPT
Claude Fable 5.1
Start with Fable 5.1 for coding and knowledge work. Give it your source material, constraints and acceptance checks, then review the result.
Everyday balance · Listed on GlobalGPT
Claude Sonnet 5
A practical starting point for writing, document analysis and coding. Check the answer against your sources and acceptance criteria.
Complex work · Listed on GlobalGPT
Claude Opus 5
Consider Opus for difficult diagnosis, complex code and long-form analysis when mistakes require expensive correction.
Quick, bounded tasks · Listed on GlobalGPT
Claude Haiku 4.5
Use Haiku for short drafts, classification and structured extraction when you can check the result quickly.
Earlier Models & Additional OptionsFable 5, Opus 4.8 and Sonnet 4.6
Claude Fable 5Earlier generation retained for existing workflows and comparisons./home/claude-fable-5?inviter=hub_research_claude&login=1
Claude Opus 4.8Earlier generation retained for existing workflows and comparisons./home/claude-opus-4-8?inviter=hub_research_claude&login=1
Claude Sonnet 4.6Earlier generation retained for existing workflows and comparisons./home/claude-sonnet-4-6?inviter=hub_research_claude&login=1
Choose by Complexity and the Cost of a Wrong Answer.
Compare Fable 5.1, Sonnet, Opus and Haiku by the work you need to do. These are editorial starting points, not benchmark scores or guaranteed speed results.
| Model | Starting Point | Typical Work | What to Check |
|---|---|---|---|
| Claude Fable 5.1Anthropic | Latest featured model | Demanding coding and knowledge work | Source fidelity, constraints and tests |
| Claude Haiku 4.5Anthropic | Efficiency | Short drafts, classification, bounded extraction | Edge cases and correction time |
| Claude Sonnet 5Anthropic | Everyday balance | Writing, document analysis and coding | Sources, constraints and tests |
| Claude Opus 5Anthropic | Complex tasks | Difficult diagnosis and long-form analysis | Retries and review effort |
Find the Guide That Matches Your Next Step.
Browse access, model selection, documents, coding, prompts and safety. Each article has one primary category.
Understand subscription routes and billing.
Give Claude the Context It Needs.
Use the linked templates and worked examples. Supply your own source material, constraints and acceptance checks.
Writing
Define the audience, preserve approved facts and specify the reader’s next action.
12 Claude Prompt TemplatesWriting & Long-Document WorkflowDocuments
Extract a fact sheet, identify conflicting versions and ask for supporting passages before drafting.
Build a Source-First DocumentEvidence & Accuracy
Connect claims to sources and separate missing information from confident guesses.
Source-Based Prompt TemplatesCheck Privacy and Answer AccuracyCoding
Provide expected behavior and tests; distinguish reasoning from executed checks.
Coding Prompt TemplatesSend Your First Claude API RequestStart With a Tool Built for Your Task.
Summarize text, draft an email, work through code or review PDF excerpts. These GlobalGPT tools offer Claude models and task-specific presets; check each tool’s input requirements.
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01Claude Text Summarizer
Turn articles, reports and meeting notes into concise summaries, key points and action items. Paste your source text and check important details before sharing.
GlobalGPT
02Claude Email Writer
Draft emails, replies and follow-ups from your brief. Set the tone, preserve the facts and review the message before sending it yourself.
GlobalGPT
03Claude Coding Assistant
Paste code for explanations, debugging suggestions, refactoring ideas and test drafts. This is text-based assistance, not Claude Code or a code execution environment.
GlobalGPT
04Claude PDF Text Summarizer
Summarize text copied or extracted from a PDF. Keep supplied page labels and check the source; this tool does not upload or read PDF files directly.
GlobalGPT
Read the Evidence Behind the Guidance.
Anthropic publishes model and policy information. GlobalGPT guides provide editorial workflows and explicitly scoped tests.
Bring Your Next Draft, Document or Coding Question.
Start with Claude Fable 5.1 in GlobalGPT, or choose another Claude model for your task.