Claude Opus 4.1 is an upgraded version of Opus 4 released by Anthropic on 2025-08-05, focusing on enhancing real coding, multi-step agent tasks and detailed tracking. It is not a general-purpose model that pursues the lowest price, but a high-end model that emphasizes high-quality engineering and professional workflow.

ClaudeOpus 4.1

Core parameters and statistics

Claude Opus 4.1 belongs to [Basic Large Model/API Infrastructure]. A brief comment: It is not a model created for cheapness and universality, but a high-intensity work model prepared for teams that "really want to hand over complex engineering tasks."

Projects	Public Information
Release date	2025-08-05
API model name	claude-opus-4-1-20250805
Core positioning	agentic tasks, real-world coding, reasoning
SWE-bench Verified	74.5%
Platform availability	Claude paid users, Claude Code, API, Amazon Bedrock, Vertex AI
Current price page display	Input $15 / MTok, Output $75 / MTok

Publicity verification: Anthropic did not generally say "smarter" this time, but directly focused on coding, agentic tasks and detail tracking, and gave hard indicators such as 74.5% SWE-bench Verified. For people who need to actually work in the code warehouse, this narrative is much more meaningful than "better at chatting".

User and market recognition

User and Market Recognition: The official announcement cited user feedback from GitHub, Rakuten, Windsurf, etc. The focus is on multi-file refactoring, precise changes in large code bases, reduction of irrelevant modifications, and long-term task stability. This shows that the target users of Opus 4.1 are very clear, that is, those who put AI into real engineering links.

Publicity verification: The official benchmark methodology is relatively complete, and even explains the upper limit of extended thinking and steps, which is more credible than just dropping one name on the list.

Hidden benefits: For senior engineering teams, the most valuable thing is not necessarily "generating longer code", but reducing attempts in the wrong direction, reducing irrelevant changes, and reducing rework review time.

Cost advantage

The Claude Opus 4.1 is not a cheap model, so "cost advantage" comes down to ROI, not unit price.

C-side/Individual: Only open to paid Claude users, not suitable for low price and general benefits as a selling point.

Developer/API: The official current price page shows that Opus 4.1 is input $15 / million tokens, output $75 / million tokens, prompt caching write $18.75 / MTok, read $1.50 / MTok. It's clearly premium model pricing.

Enterprise: The real cost-effectiveness depends on whether it can reduce the manual monitoring time of senior engineers on difficult problems. A high unit price makes sense if it can complete multi-step agent tasks in fewer steps and with less rework.

The Free Truth: There is no free API. Treating it as a "just try it" model can easily blow your budget.

Hidden costs: If the team does not have prompt caching, batch processing, task layering and routing strategies, and directly sends all requests to Opus 4.1, the cost will be very high.

Main functions

• Real Coding Tasks: especially multi-file reconstructions, complex repairs and precise modifications.
• Agent search and multi-step reasoning: suitable for long tasks and tool calling processes.
• Detailed Tracking: Suitable for complex analysis, research and rigorous data tasks.
• Claude Code combination: closer to the actual development context.

Expert’s point of view: The value of Opus 4.1 is not to make a prompt reply more elegant, but to be less likely to go astray on complex issues. This is extremely important in engineering teams.

Model and version evolution

• Opus 4: The main line of the previous generation.
• Opus 4.1: 2025-08-05, explicitly recommended to upgrade from Opus 4.
• Opus 4.5 / 4.6 / 4.7 / 4.8: The evolution has continued, but 4.1 is still an important milestone because it is one of the starting points for "more rigorous real-world coding and Agent tasks".

Version Interpretation: The significance of 4.1 in product history is not necessarily the strongest in the end, but the clear advancement of Claude's high-end route from "strong general model" to the direction of "can be entrusted with complex engineering tasks".

Technical advantages

Performance and Throughput: The official does not disclose the total list of TTFT, RPM, and TPM, but the price page clearly lists the caching and batch systems, indicating that it is suitable for production environments that are serious about cost control, rather than extensive use.

Adaptation boundary: It is best at complex coding, agent tasks and high-value knowledge work; it is least suitable for brainlessly routing all ordinary chats and batch low-value tasks to it.

Technical Strengths:

Mechanism: Hybrid reasoning model supports adjusting thinking intensity according to task complexity.

Effect: More stable on difficult coding, multi-step tasks and detailed consistency.

Scenario: Code warehouse changes, complex document analysis, tool chain agents, multi-stage knowledge tasks.

How to use

The official has given a clear model name.

curl https://api.anthropic.com/v1/messages \
  -H "x-api-key: <YOUR_API_KEY>" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-opus-4-1-20250805",
    "max_tokens": 1024,
    "temperature": 0.2,
    "stream": false,
    "messages": [
      {"role": "user", "content": "Review this refactor plan and list risks."}
    ]
  }'

3 Minutes to Get Started: Don’t use it to make small talk first. The most appropriate first round of validation is to give a multi-document, context- and risk-based problem to see if it is actually less biased than cheaper models.

Product Pricing

The current official price page shows:

• Input: $15/MTok
• Output: $75/MTok
• Prompt caching write: $18.75/MTok
• Prompt caching read: $1.50 / MTok

Current Limitations: This is a clear high-end model price point and is not suitable as a default bottom-line model.

Application scenarios

• Advanced Coding Tasks: Multi-file repair, complex refactoring, agent development.
• High Value Professional Jobs: High-precision tasks in research, analysis, legal and financial categories.
• Enterprise Agent: Requires tool invocation and context persistence.

Dimensionality reduction strike scenario: Tasks that are complex, multi-step, easy to rework, and have low tolerance for errors.

Persuasion Scenarios: Low-value batch Q&A, ordinary customer service, and extremely budget-sensitive scenarios.

Applicable people

• Senior Development Team: Willing to trade high unit price for low rework.
• Agent Product Team: Needs more stable tool calls and complex execution.
• Enterprise knowledge workflow: requires high-quality output and detailed tracking.

Persuasion Scenario:

• Teams without budget governance and routing strategies.
• People who want to have everything in one model package.

CURRENT LIMITATION: Opus 4.1 is priced significantly higher than the Sonnet and Haiku tiers and is not suitable for simple queries and everyday conversational tasks. Need to be used with model routing strategy.

Summary and Outlook

The positioning of Claude Opus 4.1 is very clear: it is not a model that everyone should use by default, but a "heavy weapon" needed by teams that want to truly hand over complex engineering and high-value tasks. Its high price is a fact, but as long as it leads to fewer mistakes, less rework, and fewer irrelevant changes, the price makes business sense.

Procurement/Adoption Risk Assessment: Routing layer prompt caching, batching and manual review strategies must be implemented before going online, otherwise its bills will quickly get out of control; it is more suitable as a problem processing layer rather than a daily chat layer.

Related tools: deepseek, ChatGPT

Comparison of competing products

Comparison dimensions	Claude Opus 4.1	Competitor A	Competitor B
Core Differences	—	—	—
Price	—	—	—
Target Users	—	—	—

Note: The above comparison is based on product public information, and actual differences are based on user experience.

Version Info

• Claude Opus 4.1 ：An upgraded version of Opus 4, oriented to agentic tasks, real-world coding and reasoning. The API model is named claude-opus-4-1-20250805. （2025-08-05）
• Claude Opus 4 ：The direct predecessor of Opus 4.1, the official announcement of 4.1 clearly recommends upgrading from Opus 4 to 4.1 for all use cases. There is no official precise date yet. （~2025-05）