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Model catalog (developer docs) — capture 20260902T061505Z

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Models overview - Claude Platform Docs
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Models
Models overview
Claude Fable 5.1
Claude Opus 5
Claude Sonnet 5
Claude Haiku 4.5
Specialized models
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Legacy models
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Guides
Choosing a model
Optimizing for cost and intelligence
Upgrade between model versions
Lifecycle and reference
Model IDs and versioning
Model deprecations
Model cards
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Models & pricing
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Models
Models overview
Claude is a family of state-of-the-art large language models developed by Anthropic. Compare the current lineup, find the model ID for every platform, and open each model's page for its full specs and resources.
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Choosing a model
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Pricing
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Migration guide
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Compare models
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If you're unsure which model to use, start with
Claude Opus 5
 for most workloads. Use
Claude Fable 5.1
 for demanding reasoning and long-horizon agentic work, or when your evals on Claude Opus 5 at higher effort still fall short. All current models support text and image input, text output, multilingual capabilities, vision, and tool use. Each model's page lists the platforms it's available on.

Feature
Claude Fable 5.1
For demanding reasoning and long-horizon agentic work
Claude Opus 5
For complex agentic coding and enterprise work
Claude Sonnet 5
The best combination of speed and intelligence
Claude Haiku 4.5
The fastest model with near-frontier intelligence
Comparative latency
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Slower
Moderate
Fast
Fastest
Pricing
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$10 / input MTok
$50 / output MTok
$5 / input MTok
$25 / output MTok
$2 / input MTok
$10 / output MTok
$1 / input MTok
$5 / output MTok
Claude API ID
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claude-fable-5-1
claude-opus-5
claude-sonnet-5
claude-haiku-4-5-20251001
Capabilities
Thinking
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Adaptive (always on)
Adaptive
Adaptive
Extended
Default effort
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high
high
high
Not supported
Context window
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1M tokens
1M tokens
1M tokens
200K tokens
Max output
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128K tokens
128K tokens
128K tokens
64K tokens
Reliable knowledge cutoff
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Jun 2026
May 2026
Jan 2026
Feb 2025
Show all details
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Once you've picked a model,
learn how to make your first API call
. To understand how model IDs, aliases, and snapshots work, see
Model IDs and versioning
; for the reliable-knowledge and training-data cutoffs behind each model, see
Anthropic's Transparency Hub
.

Using the Models API
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You can query model capabilities and token limits programmatically with the
Models API
. The response includes
max_input_tokens
,
max_tokens
, and a
capabilities
 object for every available model.

Prompt and output performance
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Current Claude models excel in:

Performance:
 Top-tier results in reasoning, coding, multilingual tasks, long-context handling, honesty, and image processing. See
Prompting best practices
 for general and model-specific prompting guidance.

Engaging responses:
 Claude models are ideal for applications that require rich, human-like interactions. If you prefer more concise responses, adjust your prompts to guide the model toward the desired output length. Refer to the
prompt engineering guides
 for details.

Output quality:
 When migrating from a previous model generation, you may notice larger improvements in overall performance. If you're on Claude Opus 4.8 or earlier, see
Migrating to Claude Opus 5
.

Get started with Claude


If you're ready to start exploring what Claude can do for you, dive in! Whether you're a developer looking to integrate Claude into your applications or a user wanting to experience the power of AI firsthand, the following resources can help.

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Intro to Claude
Explore Claude's capabilities and development flow.
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Quickstart
Learn how to make your first API call in minutes.
Choosing a model
Establish criteria and pick the right model for your use case.
Pricing
Complete pricing, including batch discounts and prompt caching rates.
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Model deprecations
Lifecycle status and retirement commitments for every model.
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Claude Console
Craft and test prompts directly in your browser.

Looking to chat with Claude? Visit
claude.ai
. If you have questions, reach out to the
support team
 or the
Discord community
.
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