Is Claude Opus 5.5 out yet?
Yes.
Use Claude Opus 5.5 today
Affiliate link: if you subscribe, OutYet earns a commission at no extra cost to you. Merlin is an independent app, not made by Anthropic. How affiliate links work
About Claude Opus 5.5
Anthropic Opus-class model released Sep 22, 2026, priced at $4/$20 per MTok.
How we confirmed it
Released via the API
September 22, 2026 at 12:00 PM UTC
An administrator marked this model available (silently).
Open detection source →Release timeline
- 2026-10-16T18:12:29.230Z First official availability observed
- 2026-10-16T18:12:29.230Z Availability confirmed after the second check
Waiting for Anthropic's next model?
One click creates your free account (or signs you into an existing one) and turns on alerts for Anthropic releases. There's no password to set, and you can unsubscribe any time.
Benchmarks
LM Arena#3
Claude Opus 5.5 (High) · via LM Arena · 8,300 votes · captured Oct 17, 2026 · source
1508.1664796431178
Coding#2
Claude Opus 5.5 · via BenchLM.ai · captured Oct 17, 2026 · source
82.62
Agentic#1
Claude Opus 5.5 · via BenchLM.ai · captured Oct 17, 2026 · source
90.31
Reasoning#3
Claude Opus 5.5 · via BenchLM.ai · captured Oct 17, 2026 · source
86.1
Knowledge#1
Claude Opus 5.5 · via BenchLM.ai · captured Oct 17, 2026 · source
90.06
MultimodalGrounded#3
Claude Opus 5.5 · via BenchLM.ai · captured Oct 17, 2026 · source
92.2
GDP.pdf
Claude Opus 5.5 (Adaptive/Max) · via Epoch AI · captured Oct 17, 2026 · source
30.6
Sourced metrics mirrored with attribution - not community sentiment.
Data from BenchLM.ai.
Data from Epoch AI, “AI Benchmarking Hub” (CC BY 4.0).
Vibe rating
How this model actually feels to use, rated by the people here.
No vibe ratings yet. Be the first.
Sign in to rate this model.
Model Pulse
How is this model behaving today? One check-in per person per day: the running record of “did they nerf it”. Resets at midnight UTC.
No check-ins yet today. Be the first to log how this model is behaving.
Community consensus
An AI summary of the public comments here. Not a sourced fact.
Not enough public feedback yet to summarize. Add a comment to help build the picture.
Compare Claude Opus 5.5 with another model →
Also waiting on: Gemini 3.5 Pro, GLM-6, Grok 5, Amazon Nova 2 Pro
Comments
Missing a model, or wishing OutYet did something it doesn't? Tell us what to build.