Anthropic

Claude Mythos 5.1

claude-mythos-5-1

A restricted Claude model for advanced cybersecurity and biology research workflows.

Restricted Claude model for advanced cybersecurity and biology research workflows

1M context1M context
Released2026-09-01
Relays2 sites
reasoningtool uselong context

Model information

Model ID
claude-mythos-5-1
Context
1M
Max input
-
Max output
128K
Knowledge cutoff
2026-06
Open weights
Not supported
License
-
Release date
2026-09-01

Input

Text: SupportedImage: SupportedAudio: Not supportedVideo: Not supportedPDF: SupportedFile: Supported

Output

Text: SupportedImage: Not supportedAudio: Not supportedVideo: Not supported

API capabilities

Reasoning: SupportedTool call: SupportedStructured output: UnknownTemperature: Not supported

Relay Comparison

Compare token, per-request, or per-second pricing by relay channel.

How should Claude Mythos 5.1 relay pricing be compared?

This Claude Mythos 5.1 pricing page compares official pricing with public prices from 2 listed AI gateways. Token prices are shown in CNY per 1M tokens, while per-request, per-second, and per-character rows use the unit shown in the table. Last updated: 11/05/2026, 08:14.

Data sources
Public price catalogs, official pricing records, and monitoring results.
Metric definitions
Uptime means successful probe response rate, fake-rate signals possible model mismatch or abnormal output risk, and latency is average API response time.
Risk note
Relay gateways are third-party services. Pricing, billing, privacy, and stability can change; start with a small top-up and verify reliability before continued use.