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Anthropic
Claude Opus 4.5
Claude Opus 4.5 is Anthropic's frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use.
Quick Stats
Context
200K
Max Output
64K
Provider
Anthropic
Specs
2
Modalities
in filein imagein textout text
Specs & List Price (per 1M tokens)
Quality
Input $5Output $25Cache read $0.5Cache write $6.25
Value
Input $2.5Output $12.5Cache read $0.25Cache write $3.125
Recommended Plan
Claude Opus 4.5 Starter Plan
Pay-as-you-go after top-up; $1 free credit for new users.
API Endpoint
Model ID
anthropic/claude-opus-4.5cURL
curl https://intertoken.ai/v1/chat/completions \
-H "Authorization: Bearer $TOKENPORTAL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-opus-4.5",
"messages": [{"role": "user", "content": "Hello!"}]
}'Python (openai SDK)
from openai import OpenAI
client = OpenAI(
base_url="https://intertoken.ai/v1",
api_key="$TOKENPORTAL_API_KEY",
)
resp = client.chat.completions.create(
model="anthropic/claude-opus-4.5",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)Start using this model
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