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Claude

claude-sonnet-4-5-30%

claude-sonnet-4-5

Sonnet-tier Claude model balancing capability and cost for production workloads.

CONTEXT
200K
RELEASED
Sep 2025
INPUT /MTOK
$2.1$3
OUTPUT /MTOK
$10.5$15

Connect

Call claude-sonnet-4-5 through the gateway. Native is the model's own wire protocol; Compatible endpoints are translated by the gateway.

POST /v1/messagesNative
curl https://apiarc.ai/v1/messages \
  -H "Content-Type: application/json" \
  -H "x-api-key: $APIARC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -d '{
    "model": "claude-sonnet-4-5",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Providers

Routes offering claude-sonnet-4-5 through the gateway, with list pricing.

ProviderInput /MOutput /MCache read /MLatency (30d avg)
AnthropicAnthropic-30%
$2.1$3$10.5$15$0.21$0.3—