Claude 4.x family
Anthropic's Claude 4.5 lineup — Opus, Sonnet, Haiku.
Anthropic ships three tiers under the Claude 4.x umbrella. Opus for the hardest reasoning tasks, Sonnet for the sweet-spot of capability + cost, Haiku for high-volume work where latency wins. All three ship a 200K-token context window and the same tool-use surface.
Specifications side-by-side
| Spec | Anthropic: Claude Opus 4.5 | Anthropic: Claude Sonnet 4.5 | Anthropic: Claude Haiku 4.5 |
|---|---|---|---|
| Provider | anthropic | anthropic | anthropic |
| Context | 200K | 1000K | 200K |
| Max output | 64,000 | 64,000 | 64,000 |
| Input $/Mtok | $5.00 | $3.00 | $1.00 |
| Output $/Mtok | $25.00 | $15.00 | $5.00 |
| Modalities | file, image, text | text, image, file | image, text |
| License | LicenseRef-Anthropic-Commercial | LicenseRef-Anthropic-Commercial | LicenseRef-Anthropic-Commercial |
| Released | 2025-11-24 | 2025-09-29 | 2025-10-15 |