Anthropic: Claude Opus 4.5
Analysis Summary
Claude Opus 4.5 is Anthropic's mid-generation Opus release, sitting between the earlier 4.x series and the current flagship. It brings strong reasoning, coding, and agentic scores alongside full multimodal support including vision, tool use, and function calling. The 200K context window allows it to handle large codebases, lengthy contracts, and extended document analysis in a single pass.
For businesses, this model is well-suited to autonomous coding agents, long-document analysis, customer-facing content generation, and multi-step tool-use workflows. Instruction following is reliable, and the combination of vision and function calling means teams can consolidate diverse tasks on one model. Its main limitation is cost: at $5 input and $25 output per million tokens, it is expensive for high-volume use.
Opus 4.5 is a strong choice for quality-critical, lower-volume workloads where breadth of capability matters. Teams already in the Anthropic ecosystem will find it a natural fit for complex tasks, though the current flagship Opus 4.6 and above offer further capability gains for those who need the absolute best.
Assessed June 6, 2026
Editorial notes
Claude Opus 4.5 from Anthropic delivers strong reasoning, coding, and agentic performance with vision, tool use, function calling, and a 200K context window, making it a capable all-round model for demanding business workflows.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How Anthropic: Claude Opus 4.5 compares
Anthropic: Claude Opus 4.5 ranks #21 of 378 AI models we track for overall intelligence, #15 of 315 for coding, #21 of 289 for agentic tasks. Its 200K-token context window is larger than 66% of the models we list. At $5.00 per million input tokens it is cheaper than 7% of comparable models.
About Anthropic: Claude Opus 4.5
Claude Opus 4.5 is Anthropicās frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and..
Capabilities
Performance Indices
Source: Artificial Analysis
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does Anthropic: Claude Opus 4.5 stack up?
Compare side-by-side with other professional models.
Model Information
| OpenRouter ID |
anthropic/claude-opus-4.5
|
| Provider | anthropic |
| Release Date | November 24, 2025 |
| Context Length | 200,000 tokens |
| Max Completion | 64,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $5.00 | $0.005000 |
| Output | $25.00 | $0.025000 |
Live Performance
Live endpoint metrics, refreshed every 30 minutes.
Leaderboard Categories
External Resources
Frequently asked questions about Anthropic: Claude Opus 4.5
How much does Anthropic: Claude Opus 4.5 cost?
Anthropic: Claude Opus 4.5 costs $5.00 per million input tokens and $25.00 per million output tokens.
What is the context window of Anthropic: Claude Opus 4.5?
Anthropic: Claude Opus 4.5 has a context window of 200,000 tokens (200K).
Is Anthropic: Claude Opus 4.5 good for coding?
On our coding benchmark index, Anthropic: Claude Opus 4.5 ranks #15 of 315 models, placing it in the top quartile of the field for code generation and debugging.
What can Anthropic: Claude Opus 4.5 do?
Anthropic: Claude Opus 4.5 supports image/vision input, tool use, and function calling.
Who created Anthropic: Claude Opus 4.5?
Anthropic: Claude Opus 4.5 is developed by Anthropic and was released on November 24, 2025.
