Claude Sonnet 4

CODING

Anthropic · anthropic/claude-sonnet-4

Available

Balanced frontier model for production coding agents, long-context reasoning and tool use. Strong instruction following with predictable latency.

Input / 1M tokens

৳360

Output / 1M tokens

৳1,800

Context length

200K

Max output

64K

Placeholder rates. Final pricing is published per model before launch.

Suitable for

Coding
Reasoning
Vision
Agents

Example request

cURL

curl https://padmarouter.com/v1/chat/completions \
  -H "Authorization: Bearer $PADMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-sonnet-4",
    "messages": [{"role": "user", "content": "Hello from Dhaka!"}]
  }'

Try in Playground Docs for this model

Performance

Throughput74 tok/s

Time to first token1.4s

StreamingSupported

Tool callingSupported

Measured from Dhaka over the last 24h of prototype traffic.

Routing

Primary routeAnthropic direct

FallbackSecondary region

Prompt retentionNot retained