Anthropic

Claude 5.5 Haiku

High-throughput lightweight model matching Claude 3.5 Sonnet class intelligence at extreme speed and low token cost.

#32released Oct 12, 2026·Proprietary·Not disclosed
textimage500K ctxreasoning
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)
Coding (84)Mathematics (86.5)Hard Science (GPQA) (88)Agentic & Tool Use (78.5)Knowledge (MMLU) (81)Vision / Multimodal (88)

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 key
curl 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."}]
  }'

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
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Scores by Source

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

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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

Add a live Podium Score badge to your GitHub or Hugging Face README — it links back to the live ranking.

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Claude 5.5 Haiku LLMPodium Score
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