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Claude Opus 5.5
Summary
Claude Opus 5.5 is Anthropic’s latest LLM, positioned to match Claude Fable 5.1 on most tasks while cutting compute cost by ~40% and latency by >30%. It ships with the same safety guardrails as the top‑tier models, scores best on Anthropic’s internal alignment audit, and shows measurable gains on coding‑heavy benchmarks (e.g., 66.4% on Agentic‑coding Terminal‑Bench vs 52.3% for Opus 5). Pricing d…
- Performance: Opus 5.5 beats Opus 5 on most agentic‑coding and knowledge‑work benchmarks; gap to Fable 5.1 is narrower in practice.
- Cost: Token pricing is 20‑25% lower than Opus 5, with cache‑read cost 60% lower; overall workload cost ~40% down.
- Speed: Generates output >30% faster; fast‑mode offers up to 2.5× speed at higher token rates.
- Safety/Alignment: Highest scores on Anthropic’s automated behavioral audit; reduced prompt‑injection risk; safeguards enabled during evaluation.
The model demonstrates that LLMs can deliver frontier‑level coding assistance at a substantially lower compute budget, making large‑scale code‑base refactoring and agentic workflows more affordable for enterprises. The safety improvements and alignment testing also lower operational risk when deplo…
5/10
