Claude Opus 4.1

Anthropic chatreasoningtool_usevision Long

API ID: anthropic/claude-4.1-opus-20250805

Compare Calculate
Input Price
$15.00
/1M tokens
Output Price
$75.00
/1M tokens

About Claude Opus 4.1

Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains in multi-file code refactoring, debugging precision, and detail-oriented reasoning. The model supports extended thinking up to 64K tokens and is optimized for tasks involving research, data analysis, and tool-assisted reasoning.

💰
Price Ranking
#1223 lowest price among 1240 Chat models

Model Specifications

Context Length
200k
Max Output
32k
Release Date
2025-08-05
Capabilities
chat reasoning tool_use vision
Input Modalities
imagetextfile
Output Modalities
text

Best For

  • Complex reasoning, math problems, multi-step logic
  • Image analysis, document understanding, visual Q&A
  • Conversations, content writing, general assistance

Consider Alternatives For

  • Simple Q&A (cheaper models available)

💰 Real-World Cost Examples

Estimated monthly costs for common use cases

Personal AI Assistant
$29.25
/month
50 conversations/day, ~500 tokens each
Customer Service Bot
$900.00
/month
1000 tickets/day, ~800 tokens each
Data Analysis Pipeline
$1237.50
/month
500 analyses/day, ~2k tokens each
Calculate Your Custom Usage

Anthropic Model Lineup

Compare all models from Anthropic to find the best fit

Model Input Output Context Capabilities
Claude Opus 4.1 Current Free Free 200k chat reasoning tool_use vision
Claude 3.5 Haiku (2024-10-22) Free Free 200k chat vision
Claude 3.5 Sonnet (2024-06-20) Free Free 200k chat vision
Claude 3.5 Sonnet (2024-06-20) Free Free 200k chat vision
Claude 3 Sonnet Free Free 200k chat vision
Claude 3 Sonnet Free Free 200k chat vision
View All Anthropic Models →

Similar Models from Other Providers

Cross-brand alternatives with similar capabilities

OpenAI GPT-4
OpenAI
Input: $30.00
Output: $60.00
Context: 8k
OpenAI GPT-4
OpenAI
Input: $30.00
Output: $60.00
Context: 8k
OpenAI GPT-4 (older v0314)
OpenAI
Input: $30.00
Output: $60.00
Context: 8k
OpenAI GPT-5.2 Pro (batch)
OpenAI
Input: $10.50
Output: $84.00
Context: 400k
Compare These Models

💡 Cheaper Alternatives

Same Brand (Anthropic)

Claude 3 Haiku
$0.25 $1.25 200k
Claude 3 Haiku
$0.25 $1.25 200k
Claude Haiku 4.5 (batch)
$0.50 $2.50 200k

Cross Brand

GTE-Base Other
$0.0050 Free 512
E5-Base-v2 Other
$0.0050 Free 512
paraphrase-MiniLM-L6-v2 Other
$0.0050 Free 512

🚀 Quick Start

Get started with Claude Opus 4.1 API

Anthropic Python SDK 
import anthropic

client = anthropic.Anthropic()

message = client.messages.create(
    model="anthropic/claude-4.1-opus-20250805",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(message.content[0].text)

Resources

Continue Your Decision

Back to Anthropic Add to Compare Calculate Cost