Anthropic
Claude 5.5 Haiku
High-throughput lightweight model matching Claude 3.5 Sonnet class intelligence at extreme speed and low token cost.
Intelligence
87.5 #32
AAQI 88.0
Output Speed
145 t/s
ITL 6.9 ms/tok
Blended price (3:1)
$1.6 /1M
In $0.8/M · Out $4/M
Context
500K
≈ 1,250 A4 pages · max out 32,768
Quality Domain Radar
6-Axis Frontier Evaluation vs Category Average & Flagship
Claude 5.5 Haiku
Claude Mythos Preview (#1)
Average (68)
Radar axes are approximated from category scores where direct benchmark measurements are missing — see Methodology.
Strengths & Trade-offs
Where it wins
- Sonnet-3.5-class intelligence at a fraction of the price
- Fast enough for real-time interactive agents
- $0.80/$4 pricing for high-volume workloads
Trade-offs to watch
- Below Sonnet/Opus on frontier reasoning
- No open weights
Killer Use Cases
Real-time copilots
Interactive completions and inline edits where latency is the constraint.
High-volume pipelines
Classification, extraction and summarization at scale.
Sub-agent swarms
Cheap worker agents orchestrated by a frontier planner.
Developer Quickstart & API
Set
ANTHROPIC_API_KEY first — get an API keycurl https://api.anthropic.com/v1/messages \
-H "x-api-key: $ANTHROPIC_API_KEY" \
-H "anthropic-version: 2023-06-01" \
-H "content-type: application/json" \
-d '{
"model": "claude-haiku-5-5",
"max_tokens": 1024,
"messages": [{"role": "user", "content": "Refactor this function for O(n) time and explain the change."}]
}'import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY
msg = client.messages.create(
model="claude-haiku-5-5",
max_tokens=1024,
messages=[{"role": "user", "content": "Refactor this function for O(n) time and explain the change."}],
)
print(msg.content[0].text)const res = await fetch("https://api.anthropic.com/v1/messages", {
method: "POST",
headers: {
"x-api-key": process.env.ANTHROPIC_API_KEY,
"anthropic-version": "2023-06-01",
"content-type": "application/json",
},
body: JSON.stringify({
model: "claude-haiku-5-5",
max_tokens: 1024,
messages: [{ role: "user", content: "Refactor this function for O(n) time and explain the change." }],
}),
});
console.log((await res.json()).content[0].text);Official Resources & Links
API deployment
Compare hosts & latency
Throughput, TTFT and cache pricing across Groq, Cerebras, Together, DeepInfra, Fireworks, Bedrock and Azure.
GroqCerebrasTogether AIDeepInfraFireworks AIAWS BedrockAzure AI
Scores by Source
Category Scores
Benchmark Results
Head-to-head Live Matchups
Live Specs & Architecture
Under the hood
Haiku 5.5 — high-throughput lightweight tier
- Lightweight sibling of Sonnet 5.5 tuned for throughput
- 145 tok/s-class output with 500K context
- Prompt caching for cheap repeated prefixes
Release date
Oct 12, 2026
Architecture
Haiku 5.5 — high-throughput lightweight tier
Parameters
Not disclosed
License
Proprietary
Context Window
500,000 tokens
Max Output
32,768 tokens
Modalities
text + image
Cache Pricing
read $0.08 · write $1 /1M
Reasoning
Effort levels
Input Price
$0.8/M
Output Price
$4/M
Output Speed
145 t/s
Time to First Token
—
Data Updated
Oct 14, 2026
Estimated monthly bill
Estimated monthly spend
$0.00
Calculating savings vs GPT-4o...
Cite & embed
GitHub Markdown badge
Loading badge markdown...BibTeX
@misc{llmpodium2026claudehaiku55,
title = {Benchmark Analysis and Intelligence Evaluation of Claude 5.5 Haiku},
author = {LLMPodium Research},
year = {2026},
url = {https://llmpodium.com/models/claude-haiku-5-5}
}Embed Score Badge
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