Anthropic · Released Jan 18, 2026
Claude 4.5 Haiku
Anthropic's lightweight reasoning workhorse built for real-time subagents, interactive chat, and high-frequency classification.
OpenRating Index
49.6
0–100 composite
Reasoning Index
68.2
0–100 composite
Cost / Task
$0.22
benchmark run
Output speed
195 tok/s
blended tok/s
Time to first token
0.3s
median latency
Input price
$0.4
per 1M tokens
Output price
$1.6
per 1M tokens
Context window
200K
tokens
Strengths
195 tok/s output speed with 0.35s TTFT
Extremely low latency for conversational UI
Efficient subagent execution in multi-agent graphs
How we rate Claude 4.5 Haiku
OpenRating scores every model on the same axes. The OpenRating Index is a weighted composite of reasoning, knowledge, and agentic benchmarks, normalised to a 0–100 scale. Speed is blended output measured in tokens per second under standardised load, with time-to-first-token reported separately. Prices are list input and output prices per million tokens, and Task Cost measures end-to-end workload spending.
OpenRating Index
49.6
Reasoning Index
68.2
Token Pricing
Input per 1M tokens
$0.4
Output per 1M tokens
$1.6
Cost of 1M input + 1M output
$2
Task Cost Economics
Empirical cost breakdown for a standard OpenRating Index benchmark task ($0.22 total).
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