As of April 2026, Anthropic offers three model tiers designed for different workloads. Understanding their capabilities and trade-offs is essential for cost-effective production systems.
| Model | Best For | Context | Speed | Cost |
|---|---|---|---|---|
| Claude Opus 4.7 | Complex reasoning, coding, analysis | 200K (1M beta) | Slowest | Highest |
| Claude Sonnet 4.6 | Balanced agentic tasks, production | 200K (1M beta) | Medium | Mid-tier |
| Claude Haiku 4.5 | High volume, low latency, classification | 200K | Fastest | Lowest |
Released April 15, 2026, Opus 4.7 introduces Adaptive Thinking — the model dynamically decides when deeper reasoning is required based on task complexity. It achieves 70% on CursorBench and 98.5% visual acuity. Note: Opus 4.7 uses an updated tokenizer that may produce 1.0–1.35x more tokens depending on content type; re-benchmark your cost estimates when migrating.
Both Opus and Sonnet now support a 1 million token context window in beta. This allows analysis of entire codebases, multi-hundred-page legal documents, or massive datasets in a single request — without chunking or retrieval strategies.