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anthropic/claude-opus-5.5 — Anthropic: Claude Opus 5.5 pricing, specs and API usage

Anthropic's new default: flagship Opus quality at a lower price.

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Specifications

Context window
500K
Max output tokens
128,000
Released
2026-09
Infra providers
4
Throughput
98 tok/s
Latency (TTFB, sample)
720 ms
Capabilities
Supports tools

Pricing

per million tokens

Input
$4.00
Output
$20.00
Blended (3:1)
$8.00

Use this model

Works with any OpenAI SDK — same request shape, different model id.

curl https://api.lokarouter.id/v1/chat/completions \  -H "Authorization: Bearer sk-lkr-your-key" \  -H "Content-Type: application/json" \  -d '{    "model": "anthropic/claude-opus-5.5",    "messages": [{ "role": "user", "content": "Hello" }]  }'

Sample data for demonstration — connect your workspace for live stats.