More Models from Anthropic
Compare other engines available in this laboratory.
Opus 5.5Ultra Tier
Claude Opus 5.5 is Anthropic's September 2026 flagship Opus-class model for long-horizon agentic coding, computer use and knowledge work — 1M-token context, native image input, adaptive (non-disableable) reasoning at four effort tiers, and $4/$20 per 1M tokens (40% cheaper per typical task than Opus 5). Available with Zero Data Retention inference on ARMES AI.
1M ctx$4.00/M
Opus 5Ultra Tier
Anthropic's flagship 1M-context frontier multimodal foundation model, engineered for deep reasoning, autonomous coding agents, and complex long-horizon system execution.
1M ctx$5.00/M
Opus 4.8Ultra Tier
Anthropic's most capable model (released May 28, 2026; knowledge cutoff Jan 2026).
1M ctx$5.00/M