Latest models
- Claude Haiku 5.5 (October 7, 2026) Current
Anthropic's cheapest and fastest small model, with an adjustable effort setting, priced at $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100,000 tokens. Source: Anthropic ↗ - Claude Sonnet 5.5 (September 28, 2026) Current
The second model in the Claude 5.5 family, priced at $2 per million input tokens and $10 per million output tokens. Opus 5.5 is also available; Haiku 5.5 was announced as coming in the following weeks. Source: Anthropic ↗
Checked October 15, 2026. See the full AI model tracker.
What we like
- Sonnet 5.5 is aimed at everyday tasks, bug fixes and polished documents
- Haiku 5.5 offers a low-cost option for high-volume work
- Anthropic says it runs more than 30% faster than Sonnet 5
- Available through the Claude Platform and on AWS, Google Cloud and Azure
Watch out for
- Features and limits differ by plan
- Check the docs for current model names, since the lineup changes
- Like any AI assistant, it can be wrong; verify important facts
Claude is Anthropic’s AI assistant and model family. Anthropic released Claude Sonnet 5.5 on September 28, 2026 and Claude Haiku 5.5 on October 7, 2026, both part of the Claude 5.5 family.
Disclosure: Claude is one of the tools used to help build this site. We cover it on the same basis as every other model.
What is current
Anthropic says Sonnet 5.5 is more than 30% faster than Sonnet 5 and costs up to 30% less for most work. Per-token prices are $2 per million input tokens and $10 per million output tokens. It is available on the Claude Platform as claude-sonnet-5-5 and on Amazon Web Services, Google Cloud and Microsoft Azure. Claude Opus 5.5 is positioned for complex work. On October 7 Anthropic halved Sonnet 5.5 cache-read prices to $0.10 per million tokens.
Claude Haiku 5.5 is Anthropic’s cheapest and fastest small model, with an adjustable effort setting. Anthropic lists $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100,000 tokens, and recommends it for high-volume work such as summaries, classification and subagents, with Sonnet 5.5 and Opus 5.5 for complex coding. See our summaries of Sonnet 5.5 and Haiku 5.5, and the model tracker.
How prompting works
Give the task, the context and the format you want. For writing, paste your draft and say what to keep. Ask for a short list of changes so you can review them.
Who should use it
Writers, analysts and developers who want a capable assistant. Compare assistants in ChatGPT and Gemini.