Claude Opus 5 (Fast) API Benchmarks, Pricing & Provider Data

LLM

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.cl...

Specifications

Input and output token limits for this model, plus how it ranks on long-context understanding.

INPUT

1Mtokens

≈ 1.2K pages of text

OUTPUT

128Ktokens

8K128K1M4M

Features

Technical Details

Input
Output
Released: Jul 2026
Documentation
Tokenizer: Claude
Architecture: text+image+file->text
Moderated: Yes
Supported parameters: include_reasoningmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstool_choicetoolsverbosity

OpenRouter endpoints

1 endpoints

Third-party OpenRouter endpoint data, shown separately from LMSpeed measurements. Some 30-minute live performance fields only appear after syncing with an OpenRouter API key.

Provider endpoint	Input	Output	1d uptime	30m latency	30m throughput	Context / output
Anthropic anthropic	$10/M	$50/M	100%	—	—	undefined tokens / undefined tokens