Anthropic: Claude Opus 4.6 (cheapest-provider) (Reasoning) is a 1,000,000-token model served on Composite at $6.25 per million tokens in and $31.3 per million tokens out.
Supported — cached input is billed at the provider's cache rate, on credits and plans alike
Web search
$0.0125 per result
Thinking
Optional - see "Anthropic: Claude Opus 4.6 (cheapest-provider) (Reasoning) (Reasoning)" in the catalog to turn it on by default
Moderated
Yes - by the provider
Cost on a monthly plan
About 65 plan credits per typical call (8k in, 1k out)
Routing endpoints
1
Use Anthropic: Claude Opus 4.6 (cheapest-provider) (Reasoning) in JanitorAI or SillyTavern
Make a Composite API key and type anthropic/claude-opus-4.6:cheapest-provider-reasoning as the model name. JanitorAI takes the full URL https://composite.lucidity.sh/v1/chat/completions; SillyTavern, ChubAI, Agnai and RisuAI take https://composite.lucidity.sh/v1. It runs on credits, a plan, or your own provider key.
This model has not carried enough traffic on Composite yet to publish a success rate, a latency figure or a traffic rank. The numbers appear here once it has.
Pricing
$6.25 per million tokens input · $31.3 per million tokens output
Credits pay the provider’s price plus 25%; cache hits cost less.
On a monthly plan, a typical call (8k tokens in, 1k out) uses about 65 plan credits, at the provider's own price.
Provider
Claude Platform on AWS
Roleplay fit
Claude models are widely regarded for nuanced, in-character writing and for following detailed system prompts and character cards closely.
Context behavior
With a 1,000,000-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.
Cost for regular use
It is priced for quality-sensitive scenes, where writing quality and instruction-following matter more than minimizing per-message cost.
From the provider
Opus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks. It is built for agents that operate across entire workflows rather than single prompts, making it especially effective...
Supplied by Claude Platform on AWS, not written by Composite.