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Claude Sonnet 4.5
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Claude Sonnet 4.5

claude-sonnet-4-5llms.txt
Anthropic
Sonnet 4.5 is the best model in the world for agents, coding, and computer usage. It is also our most accurate and detailed model for long-running tasks, with enhanced knowledge in coding, finance, and cybersecurity. This model supports a thinking parameter to enable thinking requests in Claude mode.

Pricing

TierPricingCache ReadWeb SearchCache WriteCache Write 5 MinutesCache Write 1 Hour
Input<=200K
$3.3$16.5
$0.33/M tokens$0.01/request$4.125/M tokens$4.125/M tokens$6.6/M tokens
200K<Input
$6.6$24.75
$0.66/M tokens$0.01/request$8.25/M tokens$8.25/M tokens$13.2/M tokens

Input Modalities

  • Text
  • Vision
  • PDF

Output Modalities

  • Text

Context length

  • 200K tokens

Max output

  • 64K tokens

Capabilities

  • Thinking
  • Streaming
  • Tool calling
  • Web search
  • URL context
  • Code interpreter
  • Computer use
  • File search
  • Memory tool
  • Structured outputs
  • Citations
  • Prompt caching
  • Background mode
  • Server-side sessions

Providers

AWS claude-sonnet-4-5-20250929
Pricing$3.3$16.5
Cache Read$0.33/M tokens
Web Search$0.01/request
Cache Write$4.125/M tokens
Cache Write 5 Minutes$4.125/M tokens
Cache Write 1 Hour$6.6/M tokens
Pricing$6.6$24.75
Cache Read$0.66/M tokens
Web Search$0.01/request
Cache Write 5 Minutes$8.25/M tokens
Cache Write 1 Hour$13.2/M tokens
Context1M
Max output64K
Latency1.7S
Throughput39.4TPS
Uptime
87.56% uptime 3 days ago
79.30% uptime 2 days ago
93.28% uptime yesterday
Anthropic claude-sonnet-4-5-20250929
Pricing$3.3$16.5
Cache Read$0.33/M tokens
Web Search$0.01/request
Cache Write$4.125/M tokens
Cache Write 5 Minutes$4.125/M tokens
Cache Write 1 Hour$6.6/M tokens
Pricing$6.6$24.75
Cache Read$0.66/M tokens
Web Search$0.01/request
Cache Write 5 Minutes$8.25/M tokens
Cache Write 1 Hour$13.2/M tokens
Context1M
Max output64K
Latency1.9S
Throughput46.1TPS
Uptime
100.00% uptime 3 days ago
100.00% uptime 2 days ago
100.00% uptime yesterday
Azure claude-sonnet-4-5-20250929
Pricing$3.3$16.5
Cache Read$0.33/M tokens
Web Search$0.01/request
Cache Write$4.125/M tokens
Cache Write 5 Minutes$4.125/M tokens
Cache Write 1 Hour$6.6/M tokens
Pricing$6.6$24.75
Cache Read$0.66/M tokens
Web Search$0.01/request
Cache Write 5 Minutes$8.25/M tokens
Cache Write 1 Hour$13.2/M tokens
Context100K
Max output64K
Latency2.1S
Throughput53.0TPS
Uptime
0.00% uptime 3 days ago
0.00% uptime 2 days ago
0.00% uptime yesterday

Performance for claude-sonnet-4-5

Uptime is the percentage of requests that succeeded over the past 72 hours. AIHubMix continuously monitors every provider and automatically retries with the next-best provider when one returns an error or responds too slowly; Latency is total round-trip time (lower is better); Throughput is how fast the model writes (tokens per second, higher is better).

Uptime
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Latency
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Throughput
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Try this model

Python
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AIHUBMIX_API_KEY"],
    base_url="https://aihubmix.com/v1",
)

response = client.chat.completions.create(
    model="claude-sonnet-4-5",
    messages=[
      {
        "role": "user",
        "content": "Hello, how are you?"
      }
    ],
    max_tokens=1024,
    stream=False,
)

print(response.choices[0].message.content)

Frequently asked questions

What is Claude Sonnet 4.5?

Sonnet 4.5 is the best model in the world for agents, coding, and computer usage. It is also our most accurate and detailed model for long-running tasks, with enhanced knowledge in coding, finance, and cybersecurity. This model supports a thinking parameter to enable thinking requests in Claude mode.

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