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Claude Sonnet 4.5
Anthropic Claude
Released 2025-09-29
ChatJSON modeStreamingTool calling
1M
Context window
Text
Modalities
$3.00 / $15.00
Lowest input / output per M tokens
Providers & pricing (3)
| Provider | Input $/M | Output $/M | Cached input $/M | Cache write $/M | Context |
|---|---|---|---|---|---|
AnthropicLowest price claude-sonnet-4-5 | $3.00 | $15.00 | — | — | 200K |
Google Vertex AI claude-sonnet-4-5@20250929 | $3.00 | $15.00 | $0.30 | $3.75 | 1M |
AWS Bedrock anthropic.claude-sonnet-4-5-20250929-v1:0 | $3.00 | $15.00 | — | — | 200K |
Cloptima's known static list pricing per million tokens; live/negotiated rates may differ.
Example: 1,000 requests of 2,000 input and 500 output tokens costs about $13.50 on Anthropic.
Use it through Cloptima
curl https://api.cloptima.ai/v1/ai/chat/completions \
-H "Authorization: Bearer $CLOPTIMA_PAT" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-5",
"messages": [{"role": "user", "content": "Hello"}]
}'Use the bare model name and Cloptima picks the provider for each request: the lowest estimated cost among the providers your credentials or managed credits can use, filtered by your policy and provider health.
An OpenAI-compatible endpoint with per-team cost attribution, budgets and policy controls.
How the AI gateway works