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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

Output Modalities

  • Text

Capabilities

  • Thinking
  • Tools
  • Tool calling
  • Structured outputs

Providers

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
Latency1.8S
Throughput37.8TPS
Uptime
0.00% uptime 2 days ago
99.62% uptime yesterday
56.78% uptime today
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
Throughput43.5TPS
Uptime
100.00% uptime 2 days ago
98.04% uptime yesterday
100.00% uptime today
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
Latency5.3S
Throughput41.5TPS
Uptime
99.79% uptime 2 days ago
100.00% uptime yesterday
100.00% uptime today

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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