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New model detected ·

claude-opus-5-5

by Anthropic found in Anthropic API models

New model
View post on X Open source
Status
Released
Maker
Anthropic
Found in
Anthropic API models api.anthropic.com
Detected
Posted to X
6 s after detection
Model ID
claude-opus-5-5also listed as claude-opus-5.5
AI Tracker@aitrackerbot ·

New model: claude-opus-5-5 Maker: Anthropic Detected in Anthropic API models.

platform.claude.com

Evidence

Claude added claude-opus-5-5

Anthropic API models: 1 added model entry

+ "id": "claude-opus-5-5",

analysisTwo new model IDs, "claude-opus-5-5" and "claude-opus-5.5", were detected in the Anthropic API models catalog on September 22, 2026. Both are listed under the release stage with no preview access restrictions. No benchmark scores or additional capability details were provided in the catalog update.

Timeline

1 sighting

  1. release

    Spotted in Anthropic API models

    New model: claude-opus-5-5

    Post on X