Anthropic: Claude Sonnet 5.5 Performance
Try Claude Sonnet 5.5 on us. Starter credit covers your first requests, then one key reaches this route and every other model in the catalog.
anthropic/claude-sonnet-5.5
Measured performance
Continuously sampled p50/p95 time-to-first-token (TTFT), effective throughput, and success rate for Anthropic: Claude Sonnet 5.5. Effective throughput uses provider-reported output tokens over complete request time. Unsupported route and probe-configuration rows are separated from provider downtime, and no prompt or output content is stored.
| Provider | p50 TTFT | p95 TTFT | Effective throughput | Uptime | Config excluded | Availability samples |
|---|---|---|---|---|---|---|
| anthropic | 3156 ms | 8176 ms | — | 100.00% | — | 226 |
Full provider & model leaderboard.
1 route.
More routes give the auto router more room to fail over around provider 429 and 5xx responses.
Gateway overhead is measured separately.
Public status separates TLS/health overhead from full model latency so slow LLMs do not inflate the router metric.
Metadata rollups.
Status samples store latency, outcome, provider, model, route, cost, and region metadata only.
View public status or inspect provider routes.