Anthropic Claude Sonnet 4.5
Anthropic has recently Claude Sonnet 4.5 which is a successor to Sonnet 4.
Generally, Sonnet models are really good one (and little cheaper than Opus model) and I prefer to use it over other models in day to day works.
In terms of pricing, it is $3 for input and $15 for output tokens (same as Sonnet 4)
You can use this over api by passing claude-sonnet-4-5 as model name like this
curl https://api.anthropic.com/v1/messages \
-H "Content-Type: application/json" \
-H "x-api-key: $ANTHROPIC_API_KEY" \
-H "anthropic-version: 2023-06-01" \
-d '{
"model": "claude-sonnet-4-5",
"max_tokens": 1000,
"messages": [
{
"role": "user",
"content": "Why sky is blue?"
}
]
}'
Here is the comparison. As you can see apart quality output as they’ve claimed in their release post there is no other major update from Sonnet 4 model.
And for those who prefers benchmarks 👇
Here are some interesting tweets I read about Sonnet 4.5
Reference
