Claude Opus 4.5
by Anthropic
· Claude 4 family · released Nov 24, 2025
Closed
Active
Efficiency-frontier Opus with dynamic reasoning.
Pricing
Launch price (from Nov 24, 2025)
$5.00 in / $25.00 out per 1M tokens
Current price (since Nov 24, 2025)
$5.00 in / $25.00 out per 1M tokens
| Tier | Effective | In $/M | Out $/M | Cache $/M | Per image | Per second | Source |
|---|---|---|---|---|---|---|---|
| Standard | Nov 24, 2025 – now | $5.00 | $25.00 | - | - | - | - |
| Batch | Nov 24, 2025 – now | $2.50 | $12.50 | - | - | - | - |
Specifications
| Model type | Multimodal |
|---|---|
| Architecture | Dense |
| Parameters | Not disclosed |
| Context window | 200K tokens |
| Max output | 64K tokens |
| Knowledge cutoff | Sep 1, 2025 |
| License | Proprietary |
| Modalities | Text input Image input Text output |
| Tags | Agentic Coding Flagship Reasoning |
| End of life | Not disclosed |
| Last verified | Aug 20, 2026 |
Benchmarks
| Benchmark | Score | Src |
|---|---|---|
| LMSYS Chatbot Arena Elo | 1,461 | - |
| SWE-bench Verified | 80.9% | official |