Model dossier

Claude Opus 5 (Fast)

Fast-mode variant of [Opus 5](/anthropic/claude-opus-5) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

ProviderAnthropic Start comparison

Context1,000,000

Max output128,000

Pricing viewTVP price

Identity

Claude Opus 5 (Fast)

Model ID: anthropic/claude-opus-5-fast
Canonical slug: anthropic/claude-opus-5-fast-20260723
Knowledge cutoff: n/a
Created: 7/24/2026

Capabilities

textimagefiletoolsstructured

Modalities

text+image+file->texttextimagefile

Capacity

Context1,000,000

Max output128,000

TokenizerClaude