Claude 4 Sonnet
A balanced-hybrid reasoning model tuned for everyday assistant and high-volume tasks.
Claude 4 Sonnet at a glance
Context window
1M tokens
Input price
$3
per 1M tokens
Output price
$15
per 1M tokens
Why use Claude 4 Sonnet
Strengths, benchmarks, and where Claude 4 Sonnet fits in your team's workflow.
- Hybrid reasoning: supports both fast (“near-instant”) and extended thinking modes.
- Optimised for responsiveness, cost and high-volume production workloads.
- Strong coding performance relative to prior Sonnet versions (improved over Sonnet 3.7).
- Available even in free tiers (alongside paid plans).
- Better suited for general-purpose use and agents where speed + cost-efficiency matter.
Power your team with Claude 4 Sonnet
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by Claude 4 Sonnet - connected to your real data and ready for your whole team. No code, no deployment.
Build internal AI tools
Describe what you need and the Appaca agent builds it - lead scorers, report generators, email drafters - with Claude 4 Sonnet as the engine. No code, no deployment.
Give Claude 4 Sonnet your real data
Connect the tools your team already uses - Slack, Notion, Google Sheets, Airtable, and more - so Claude 4 Sonnet works with real context, not generic answers.
Automate recurring tasks
Schedule Claude 4 Sonnet to run on autopilot - daily digests, weekly summaries, or real-time triggers - all managed inside your Appaca workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by Claude 4 Sonnet - connected to the tools you already use.
Where teams use Claude 4 Sonnet
See how teams put Claude 4 Sonnet to work inside Appaca - internal tools and AI agents that work around you.
Sales
Score leads, draft follow-ups, and summarise deals with Claude 4 Sonnet doing the heavy lifting.
Explore Appaca for SalesMarketing
Draft, repurpose, and report on campaigns in your brand voice - powered by Claude 4 Sonnet.
Explore Appaca for MarketingOperations
Automate reporting, vendor tracking, and process docs with AI built around your workflow.
Explore Appaca for OperationsMore Anthropic models
Compare other Anthropic models in the Appaca AI models directory - specs, pricing, and use cases for each.
Claude 4.7 Opus
Anthropic's latest frontier Opus model, purpose-built for advanced software engineering, long-horizon agent work, and high-resolution multimodal reasoning.
View modelClaude 4.6 Sonnet
Anthropic's most capable Sonnet model, delivering a full upgrade across coding, computer use, long-context reasoning, agent planning, and professional knowledge work.
View modelClaude 4.5 Sonnet
A frontier-level hybrid-reasoning model excelling at coding, long-horizon tasks, computer use, and domain reasoning with top-tier alignment and reliability.
View modelCompare Claude 4 Sonnet with other models
See how Claude 4 Sonnet stacks up against other text models - pricing, context windows, and strengths side by side.
Build internal AI tools with Claude 4 Sonnet
Describe the tool your team needs and get a working app powered by Claude 4 Sonnet - with a built-in database, team access, and integrations. No code, no deployment.