Anthropic: Claude Haiku 5.5 is a 1,000,000-token model served on Composite at $0.125 per million tokens in and $0.625 per million tokens out. Ranked #62 of 179 models by traffic on Composite over the last 30 days, taking 0.1% of tokens and 0.07% of requests (this model and its routing variants). Measured on Composite, 100.0% of its last 17 requests on Composite succeeded, the typical first token arrives in 3769 ms, output runs at about 272.4 tokens per second.
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Specifications
Specifications and pricing as served by Composite
Model ID
anthropic/claude-haiku-5.5
Provider
cv11
Context window
1,000,000 tokens
Accepts
text, image, file
Returns
text
Input price
$0.125 per million tokens
Output price
$0.625 per million tokens
Prompt caching
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 Haiku 5.5 (Reasoning)" in the catalog to turn it on by default
Moderated
Yes - by the provider
Cost on a monthly plan
About 1.3 plan credits per typical call (8k in, 1k out)
Routing endpoints
8 (base plus 7 routing variants)
Use Anthropic: Claude Haiku 5.5 in JanitorAI or SillyTavern
Make a Composite API key and type anthropic/claude-haiku-5.5 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.
$0.125 per million tokens input · $0.625 per million tokens output
cheapThink
anthropic/claude-haiku-5.5:cheapThink
cv11
$0.125 per million tokens input · $0.625 per million tokens output
Fast
anthropic/claude-haiku-5.5:fast
Google
$0.125 per million tokens input · $0.625 per million tokens output
Fast + cheapThink
anthropic/claude-haiku-5.5:fast:cheapThink
Google
$0.125 per million tokens input · $0.625 per million tokens output
Pricing
$0.125 per million tokens input · $0.625 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 1.3 plan credits, at the provider's own price.
Provider
cv11
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 low enough for high-volume daily roleplay without the per-message cost adding up quickly.
From the provider
Claude Haiku 5.5 is Anthropic's small, fast model for high-volume, cost-sensitive work such as summarization, subagents, and browser use. It succeeds Claude Haiku 4.5 with stronger coding, computer use, and...