Anthropic
Claude Sonnet 4 20250514
Claude Sonnet 4 20250514 is an Anthropic model with vision, function calling, extended reasoning, prompt caching, and structured output capabilities. It is priced at $3 per million input tokens and $15 per million output tokens, and has a 1M token context window. Access the Claude Sonnet 4 20250514 API through Inworld Router or Realtime API.
→Function CallingReasoningPrompt CachingResponse SchemaVision
curl --location 'https://api.inworld.ai/router/v1/routers' \
--header 'Content-Type: application/json' \
--header 'Authorization: Basic <your-api-key>' \
--data '{
"name": "compare-frontier-models",
"default_route": {
"route_id": "default",
"variants": [
{
"variant": { "variant_id": "anthropic",
"model_id": "anthropic/claude-sonnet-4-20250514" },
"weight": 33
},
{
"variant": {
"variant_id": "anthropic",
"model_id": "anthropic/claude-3-haiku-20240307"
},
"weight": 33
},
{
"variant": {
"variant_id": "anthropic",
"model_id": "anthropic/claude-haiku-4-5-20251001"
},
"weight": 34
}
]
}
}'Inference providers
Access Claude Sonnet 4 20250514 through Anthropic via Inworld Router or Realtime API.
| Capabilities | Input modalities | Output modalities | |||||
|---|---|---|---|---|---|---|---|
| Anthropic | 1M | 64K | $3.00 | $15.00 | +2 |
Deprecation scheduled: 2026-05-14
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| Claude Opus 4.6 | 1M | 128K | $5.00 | $25.00 | +2 | |||
| Claude Sonnet 4.5 20250929 | 200K | 64K | $3.00 | $15.00 | +3 | |||
| Claude Sonnet 4.6 | 200K | 64K | $3.00 | $15.00 | +2 |
Start building with Claude Sonnet 4 20250514
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