Why Claire Vo Put Claude Opus 5.5 Back in Her Stack
Claire Vo tested Claude Opus 5.5 across multi-turn agentic workflows up to 82 steps. Here is how it handled prompt injection and code review.
Claude is BACK with Opus 5.5
With Claire Vo · Wednesday, September 23, 2026
Claire Vo reviews Anthropic's Claude Opus 5.5 after stepping away from Claude models due to verbose and preachy responses. She evaluates its pricing, tone changes, safety boundaries, multi-turn agentic performance, UI prototyping abilities, and SVG generation capabilities, explaining how she now divides her AI model stack between Opus 5.5 and OpenAI Codex.
Key takeaways
- Claire Vo tested Claude Opus 5.5 on four complex agentic workloads (inbox triage, backend coding, deep research, and computer use) running between 25 and 82 steps from a single prompt. Read more →
- Claire Vo abandoned earlier Claude models not over intelligence benchmarks, but because of excessive conversational verbosity and preachy disclaimers. Read more →
- Claude Opus 5.5 writes clean, valid SVG vector code directly in text, eliminating the malformed coordinates common in older models. Read more →
- Claude Opus 5.5 fixes the preachy tone and verbosity of prior releases, earning its way back into daily engineering stacks. Read more →
4 articles from this episode
Why Claude Opus 5.5 Still Refuses to Push to Prod
Claire Vo explains why Claude Opus 5.5 fixes Anthropic's verbosity problem while remaining strict on safety guardrails.
Claude Opus 5.5 Generates Clean, Animatable SVG Code
Claire Vo tests Claude Opus 5.5 on vector graphics, proving it writes clean, animatable SVG code where competing AI models output broken anatomy.
Claire Vo on Claude Opus 5.5 vs. OpenAI Codex Workflows
Claire Vo explains how she splits her AI stack between Claude Opus 5.5 for architecture and OpenAI Codex for computer use and video tasks.
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