Anthropic · Radar signal

Anthropic/claude Sonnet 5.5

Confirmed anthropic/claude-sonnet-5.5

Confirmed by the vendor. First spotted by ModelBank Radar on 2026-09-28 18:10 UTC.

100Confidence / 100

2026-09-28 18:10First spotted (ModelBank)

—Early lead

Detection timeline

2026-09-28 18:10 UTC
Signal detected
claude-sonnet-5-5
2026-09-28 18:12 UTC
Signal detected
claude-sonnet-5-5
2026-09-28 18:12 UTC
Confirmed · added to the catalog
2026-09-28 18:16 UTC
Signal detected
anthropic/claude-sonnet-5.5
2026-09-28 18:28 UTC
Signal detected
claude-sonnet-5-5
2026-09-28 18:50 UTC
Signal detected
claude-sonnet-5-5

Times are when the radar first recorded each signal. All signals come from public, official vendor channels.