Claude Opus 4.5: API Pricing, Context Window & Benchmarks
Claude Opus 4.5 is a language model from Anthropic, released in November 2025, with multimodal input.
Premium model combining maximum intelligence with practical performance. Best model in the world for coding, agents, and computer use. Most robustly aligned model with best prompt injection resistance of any frontier model. Features
Claude Opus 4.5 benchmarks
Capability tiers
Standing within each category, adjusted for leaderboard depth.
Real tasks performance
How Claude Opus 4.5 performs across real-world prompt categories.
Performance by conversation depth
How Claude Opus 4.5 holds up as conversations get longer.
Quality Tracker
Claude Opus 4.5 Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Tue Aug 25 2026Claude Opus 4.5 pricing
Providers
Claude Opus 4.5 starts at $5.00 per million input tokens and $25.00 per million output tokens via Anthropic.
| Provider | Input $/M | Cached input $/M | Output $/M | Context in / out | TTFT p95 s | Output p5 c/s | Modalities in / out |
|---|---|---|---|---|---|---|---|
 Anthropic | $5.00 | — | $25.00 | 200.0K/64.0K | 0.50 | — | / |
Cached input is the discounted price for prompt tokens served from a provider cache. TTFT is time to first token. Output is characters per second; p5 is the sustained floor exceeded by 95% of observed requests.
Claude Opus 4.5 context window
Input and output token limits for Claude Opus 4.5, plus how it ranks on long-context understanding.
Claude Opus 4.5 API
Available from the model provider
Claude Opus 4.5 has an official provider API. It is not currently routed through the LLM Stats gateway.
Read the official API documentationClaude Opus 4.5 latency
Claude Opus 4.5 time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.
Claude Opus 4.5 examples
Recent arena outputs from Claude Opus 4.5, picked from the highest-ranked matchups.
Claude Opus 4.5 license
Claude Opus 4.5 is a proprietary model available under its provider's product and API terms, has a knowledge cutoff of March 2025.
- License
- Proprietary
- Hosted access
- Knowledge cutoff
- March 2025
Proprietary license - usage restrictions apply
Claude Opus 4.5 resources
Official sources for Claude Opus 4.5: api documentation, official playground, official launch post.
Claude Opus 4.5 vs other models
The most-compared alternatives to Claude Opus 4.5 are Claude Opus 4.6, GPT-5 High, GPT-5.2. Open any pair side-by-side for benchmarks, pricing, context, and latency.
Models like Claude Opus 4.5
Models ranked just above and below Claude Opus 4.5 by LLM Stats score.
FAQ
Common questions about Claude Opus 4.5.