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Claude Opus 5.5

Anthropic · Lanzado sept 2026

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Condicional

Claude Opus 5.5 is the model Anthropic now recommends starting with for most workloads, built for long-running agentic coding and knowledge work at rates 20% below Claude Opus 5. Conditional because every benchmark is Anthropic's own and migration is not drop-in: thinking cannot be turned off, forced tool use returns an error, and most cybersecurity tasks are rerouted to Opus 4.8. Right for Claude Opus 5 teams that can absorb those breaking changes.

¿Es adecuada para ti?

Bueno para

  • Long-running agentic coding and knowledge work, the use Anthropic built it for, with a 1M-token context and 128K output (300K on the Batch API in beta)
  • Cutting cost from Claude Opus 5: $4/$20 per 1M tokens against $5/$25, cache reads $0.20 against $0.50, batch $2/$10
  • Cache-heavy agent loops: cache hits cost 5% of the input price, half the standard 10% ratio
  • Latency-sensitive work on the Claude API: fast mode (research preview) runs $8/$40 per 1M tokens, below Opus 5's $10/$50 fast rate

No recomendado para

  • Drop-in upgrades from Opus 5: thinking cannot be disabled, forced tool use returns an error, thinking blocks are tied to the model and conversation, and computer_20251124 is refused on the Claude API and Google Cloud
  • Apps that stream progress text between tool calls: that text now returns in thinking blocks that are empty at the default display setting
  • Cybersecurity work: Anthropic says most cyber tasks are rerouted to Opus 4.8, and its Cyber Verification Program has not yet been expanded to include Opus 5.5
  • Decisions that need independent benchmarks: every published score is Anthropic's own

Precios

Entrada

$4 / 1M tokens

Salida

$20 / 1M tokens

Contexto

1M ctx; 128K out; cache $0.20; fast $8/$40

Ver precios completos

Pruebas de rendimiento

PruebaPuntuaciónFuente
Terminal-Bench 4.0 (Anthropic-reported, max effort)66.4% Fuente
FrontierCode v1.1 Main (Anthropic-reported, max effort)54.4% Fuente
CursorBench 4.0 (Anthropic-reported, max effort)57.8% Fuente
GDPval-AA v2.1 (Anthropic-reported, max effort)1846 Elo Fuente
Humanity's Last Exam, with tools (Anthropic-reported, max effort)67.7% Fuente

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