Claude 4 Opus
Claude 4 Opus is Anthropic's Opus-tier model in the Claude 4 family, positioned as the largest-capacity option in that generation for complex reasoning, coding, and agentic tasks.
API Pricing
| Provider | Input / 1M | Output / 1M |
|---|---|---|
| $15.00 | $75.00 |
Prices updated daily. Last check: Sep 30, 2026
Claude 4 Opus pricing by provider
Input, output, and batch rates, plus alternatives, for one provider at a time.
Performance & Benchmarks
Source: Artificial Analysis →Reasoning & Knowledge
- MMLU-Pro86.0%
- GPQA Diamond70.1%
- Humanity's Last Exam6.2%
Coding
- LiveCodeBench54.2%
Math
- AIME 202536.3%
- AIME56.3%
- MATH-50094.1%
Instruction & Long Context
- IFBench43.3%
Benchmarks measured Sep 2026. Scores are independent evaluations, not vendor-reported.
Model Details
General
- Creator
- Anthropic
- Modalities
- Text
Capabilities
- Tool Calling
- No
- Open Source
- No
Strengths & Limitations
Strengths
- Opus tier — the highest-capacity position in Anthropic's Claude 4 generation, above Sonnet and Haiku
- Targeted at multi-step coding and agentic workflows where a model must maintain a plan across many turns
- Available through multiple channels including Anthropic's API and major cloud marketplaces, which allows procurement flexibility
- Fits cleanly into a tiered routing setup alongside smaller Claude models that share the same API surface
- Anthropic maintains a documented safety and deployment policy that some regulated buyers require for vendor review
- Same message-based API format as other Claude models, so switching tiers usually requires only a model-ID change
Limitations
- Opus-tier pricing is the highest within the Claude 4 family, making it costly as a default endpoint for high-volume traffic
- Our benchmark records show no confirmed output-tokens-per-second or time-to-first-token measurement for this entry
- Context window, modality support, and maximum output length are not confirmed in our metadata and must be checked against provider documentation
- Model weights are not distributed for self-hosting, so deployment depends on hosted API providers
- Larger models in this tier generally carry higher latency than Sonnet- or Haiku-tier siblings, which matters for interactive UIs
Key Features
About Claude 4 Opus
Common Use Cases
Claude 4 Opus suits work where a wrong answer is expensive and a retry loop is not acceptable: large refactors across a codebase, debugging failures that span multiple files, agent runs that chain many tool calls before producing a result, and analysis tasks that require holding several constraints in mind at once. It is also a reasonable choice as the reviewer or planner stage in a pipeline where cheaper models do the bulk generation. It is a poor fit for high-volume classification, routing, extraction, or short-form chat, where an Opus-tier model's cost and latency are hard to justify against Claude's Sonnet and Haiku tiers or comparable small models from other vendors.
Frequently Asked Questions
How much does Claude 4 Opus cost?
Pricing varies by provider and by pricing type — input tokens, output tokens, cached reads, and batch processing are typically billed at different rates, and cloud marketplace listings can differ from Anthropic's direct API. Check the pricing table on this page for the current rates from each tracked provider.
What is Claude 4 Opus best used for?
Complex, multi-step tasks: large code changes, long agentic runs with many tool calls, and reasoning-heavy analysis. As the Opus tier of the Claude 4 family, it is intended for the hardest instances of these workloads rather than for routine high-volume traffic.
How does Claude 4 Opus differ from Claude 4 Sonnet?
Opus and Sonnet are tiers within the same generation. Opus is the higher-capacity, higher-cost tier aimed at the most difficult tasks; Sonnet is the mid-tier option that balances capability against speed and price. Many teams route most requests to Sonnet and escalate only specific steps to Opus.
What context window does Claude 4 Opus support?
Our database does not carry a confirmed context window figure for this entry, and effective limits can vary by provider and by whether extended output or long-context modes are enabled on your account. Confirm the exact figure in the documentation of the provider you plan to use.
Can Claude 4 Opus be self-hosted?
Anthropic does not distribute Claude model weights for self-hosting. Access is through hosted APIs — Anthropic directly or through cloud providers that list the model — so deployment planning should focus on provider region availability and rate limits rather than on local infrastructure.