200K tokens
Context window
Anthropic Claude
Claude Sonnet
The default for daily work: fast, cheap enough, follows constraints
64K tokens
Max output
Paid
Cost
early 2025
Knowledge cutoff
text, image
Modalities
Last verified 20 May 2026 Pricing is deliberately not listed here - check the vendor's own page. Report a correction
What it tends to refuse
Same categories as Opus, a bit more cautious around security tooling
Most workflows in this library were tested on Sonnet. It has the same context window as Opus and costs a fifth as much per input token.
Standing rules for this model go in CLAUDE.md, not in every message.
See the config files.
Written for Claude
All 26- CheatsheetClaude
Claude Code commands worth knowing
The slash commands that save the most time, from your first CLAUDE.md to reviewing a diff before it ships.
Tested on Claude Sonnet · Sep 2026
Slack MCP server
Lets the model read and post to the Slack channels it can access: search history, summarise a thread, or draft a message for you to send.
Tested on Claude Sonnet · Jun 2026
GitHub MCP server
Issues, pull requests and code search without leaving the conversation. Scope the token to what you need.
Tested on Claude Sonnet · May 2026
- ConfigClaude
CLAUDE.md for a data pipeline repository
A Claude Code project file that names the pipeline stages, says which scripts touch production data, and lists what needs a human sign-off before it…
Claude Skills and connectors
How Claude extends a conversation with packaged capabilities and live connections to services such as Google Drive and Slack. Configure them once and…
Tested on Claude Sonnet · Jun 2026
Notion MCP server
Gives the model access to your Notion pages and databases: read project docs, update a status field, or draft a new page from a conversation.
Tested on Claude Sonnet · Jun 2026