How much does Claude Opus 4.8 cost?

Claude Opus 4.8 costs $5.00/M input tokens and $25.00/M output tokens, with separate rates for Cache Read at $0.50/M tokens, Cache Write at $6.25/M tokens and Cache Write (1h) at $10.00/M tokens.

What is the context length of Claude Opus 4.8?

Claude Opus 4.8 has a 1,000,000 token context window. It supports up to 128,000 completion tokens.

Does Claude Opus 4.8 support tool calling and structured outputs?

Yes. Claude Opus 4.8 accepts tools and tool_choice for function calling. It supports response_format for JSON output, without JSON-schema enforcement.

What inputs and outputs does Claude Opus 4.8 support?

Claude Opus 4.8 accepts text, images and files such as PDFs as input and returns text.

Which providers serve Claude Opus 4.8?

Claude Opus 4.8 is served by 5 providers on OpenRouter: Google Vertex (US), Azure, Amazon Bedrock (EU), Anthropic and Claude Platform on AWS. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

When was Claude Opus 4.8 released?

Claude Opus 4.8 was released on May 27, 2026.

Anthropic: Claude Opus 4.8

Name: Anthropic: Claude Opus 4.8
Author: anthropic

anthropic/claude-opus-4.8

Compare

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token context window. It is suited for highly autonomous agents, long-horizon agentic work, knowledge work, and memory-driven tasks where coherence over extended sessions matters.

It is particularly strong on multi-step reasoning, complex coding, and end-to-end project orchestration - large codebases, multi-stage debugging, and long-running asynchronous agent pipelines. Beyond coding, it handles knowledge work such as drafting documents, building presentations, and analyzing data, maintaining quality across very long outputs.

Modalities

In / Out Price

$5 / $25per 1M

Context

Released

May 27, 2026

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick — Balanced (price + speed), Nitro (fastest), or Exacto (highest tool-calling accuracy).

Latency / throughput


$5.00	$25.00	$0.50	1.01s	62 tps	100.00%
$5.00	$25.00	$0.50	3.63s	80 tps	99.97%
$5.00	$25.00	$0.50	2.05s	51 tps	100.00%
$5.00	$25.00	$0.50	--	--	100.00%
$5.00	$25.00	$0.50	2.18s	53 tps	99.98%
$5.00	$25.00	$0.50	1.30s	51 tps	99.99%
$5.50	$27.50	$0.55	--	--	100.00%
$5.50	$27.50	$0.55	--	--	100.00%
$5.50	$27.50	$0.55	0.70s	36 tps	100.00%
$5.50	$27.50	$0.55	--	--	100.00%

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Throughput

80tok/s

P50, best across providers

Latency

0.70s

P50, best provider

Latency / throughput

AutoExacto Benchmarks

GPQA DiamondTAU-Bench

Azure (US)

90.0%81.4%

Amazon Bedrock

90.2%78.7%

Claude Platform on AWS

88.4%79.9%

Google Vertex

89.5%78.3%

Amazon Bedrock

89.9%77.8%

Azure

90.5%77.1%

Amazon Bedrock

90.0%77.5%

Anthropic

89.3%78.1%

Google Vertex (US)

89.5%77.5%

Claude Platform on AWS

89.4%77.2%

Google Vertex (Europe)

89.2%76.7%

+1 more providers

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)

100.00%

Availability (3d)

99.93%

Availability over the last 3 days

Last 72 hours

Availability 99.93%

3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability

99.94%

Without Routing

70.49%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Claude Code

Claude Code is Anthropic's agentic coding tool that reads your entire codebase, plans and executes changes across files, runs tests, and iterates on failures, all from natural language prompts.

351Btokens

Hermes Agent

Hermes Agent is an open-source, self-improving AI agent by Nous Research that runs persistently with memory across sessions, and builds reusable skills from experience. It comes with 40+ built-in tools, including web search, browser automation, and vision, plus scheduled automations and subagents.

157Btokens

OpenClaw

OpenClaw is an open-source AI agent that connects to your messaging apps and takes real actions on your behalf, from running commands and browsing the web to managing files and sending emails.

47.9Btokens

There are many coding agents, but this one is yours.

41Btokens

Framer

Create a professional website with Framer’s no-code AI website builder. Design freely, manage CMS content, optimize SEO, collaborate, and publish fast.

39.3Btokens