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.
Compare models
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 5.1For demanding reasoning and long-horizon agentic work | Claude Opus 5For complex agentic coding and enterprise work | Claude Sonnet 5The best combination of speed and intelligence | Claude Haiku 4.5The fastest model with near-frontier intelligence |
|---|---|---|---|---|
| Comparative latency | Slower | Moderate | Fast | Fastest |
| Pricing | $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 | ||||
| Capabilities | ||||
| Thinking | Adaptive (always on) | Adaptive | Adaptive | Extended |
| Default effort | high | high | high | Not supported |
| Context window | 1M tokens | 1M tokens | 1M tokens | 200K tokens |
| Max output | 128K tokens | 128K tokens | 128K tokens | 64K tokens |
| Reliable knowledge cutoff | Jun 2026 | May 2026 | Jan 2026 | Feb 2025 |
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
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
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.
Explore Claude's capabilities and development flow.
Learn how to make your first API call in minutes.
Establish criteria and pick the right model for your use case.
Complete pricing, including batch discounts and prompt caching rates.
Lifecycle status and retirement commitments for every model.
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.