How much does Claude Opus 4.8 (Fast) cost per token?

Claude Opus 4.8 (Fast) is priced at $10.00 per million input tokens and $50.00 per million output tokens, per OpenRouter as of Aug 21, 2026.

What is Claude Opus 4.8 (Fast)'s context window?

Claude Opus 4.8 (Fast) supports a context window of up to 1M tokens, per Anthropic.

What are the alternatives to Claude Opus 4.8 (Fast)?

By OpenRouter usage, comparable models include DeepSeek V4 Flash, Hy3, and Nemotron 3 Ultra. Side-by-side comparisons are linked in the alternatives table.

ModelsAnthropic

Claude Opus 4.8 (Fast)

Name: Claude Opus 4.8 (Fast)
Author: Anthropic

openrouter price docs

Context

tokens

Released

May 27, 2026

on OpenRouter

Pricing

Price per million tokens

Input $/MTok

$10.00

OpenRouter · Aug 21, 2026

Output $/MTok

$50.00

OpenRouter · Aug 21, 2026

Cache read $/MTok

$1.00

OpenRouter

Cache write $/MTok

$12.50

OpenRouter

Current Claude Opus 4.8 (Fast) prices per million tokens across tracked sources.
Source	Tracked slug	In $/MTok	Out $/MTok	Cache read	Cache write	Context	Effective	Last Δ (in)
OpenRouter	anthropic/claude-opus-4.8-fast	$10.00	$50.00	$1.00	$12.50	1M	Aug 21, 2026	—
models.dev	openrouter/anthropic/claude-opus-4.8-fast	$10.00	$50.00	$1.00	$12.50	1M	Aug 21, 2026	16.7%

latest tracked price per source · Δ = most recent input-price move within that source

2 sources tracking

Input $/MTok

Output $/MTok

per-source step lines · $/MTok

history since Jul 8, 2026

Specs

Context & availability

Claude Opus 4.8 (Fast) specifications.
Provider	Anthropic
Context window	1M tokens
Listed on OpenRouter	May 27, 2026
Tracked price sources	OpenRouter · models.dev
OpenRouter slugs	anthropic/claude-opus-4.8-fast · anthropic/claude-4.8-opus-fast-20260528

source: OpenRouter model catalog + tracked price feeds

id: claude-opus-4-8-fast

Usage

Share of OpenRouter tokens

90-day daily

usage share pending — this model isn't in the tracked OpenRouter model rankings yet

Benchmarks

Benchmark results

Benchmark scores for Claude Opus 4.8 (Fast).
Benchmark	Configuration	Score	Date	Source
no benchmark results attributed to Claude Opus 4.8 (Fast) yet

scores as published by each benchmark; configurations differ — compare within a row's benchmark only

Alternatives

Similar models

Alternatives to Claude Opus 4.8 (Fast) by OpenRouter usage-rank proximity.
#	Model	Tokens/day	7d Δ	Head-to-head
1	DeepSeek V4 FlashDeepSeek	2.7T	35.1%	vs Claude Opus 4.8 (Fast)
2	Hy3Tencent	1.3T	12.2%	vs Claude Opus 4.8 (Fast)
5	Nemotron 3 UltraNVIDIA	733B	83.5%	vs Claude Opus 4.8 (Fast)
7	GLM 5.2Z.ai	533B	1.3%	vs Claude Opus 4.8 (Fast)

ranked by OpenRouter usage-rank proximity

snapshot Aug 20, 2026

FAQ

Claude Opus 4.8 (Fast) FAQ

How much does Claude Opus 4.8 (Fast) cost per token?: Claude Opus 4.8 (Fast) is priced at $10.00 per million input tokens and $50.00 per million output tokens, per OpenRouter as of Aug 21, 2026.
What is Claude Opus 4.8 (Fast)'s context window?: Claude Opus 4.8 (Fast) supports a context window of up to 1M tokens, per Anthropic.
What are the alternatives to Claude Opus 4.8 (Fast)?: By OpenRouter usage, comparable models include DeepSeek V4 Flash, Hy3, and Nemotron 3 Ultra. Side-by-side comparisons are linked in the alternatives table.

Alerts

Track Claude Opus 4.8 (Fast)

Email me when Claude Opus 4.8 (Fast)'s price moves or it gets deprecated.