Anthropic: Claude 3 Haiku
anthropic/claude-3-haiku · AnthropicNot yet established- Declared family
- Claude
- Evidence confidence
- Unknown
- Declared tokenizer tag
- Claude
- Entered catalogue
- 13 March 2024
- Last tested
- 21 August 2026
- Measurement
- Measured
Identity statement
Anthropic: Claude 3 Haiku has a clean measured fingerprint that currently sits alone: no other measured model shares its signature.
Evidence stack
Signals of different kinds, weighed together| Signal | Result | Reference |
|---|---|---|
| Tokenizer signature | Clean measurement; no exact match yet | tk_2d06485c |
| API surface | No other entry shares this exact contract | api_b5cd1a4d |
| Context and output | 200,000 context · 4,096 max output | declared |
| Reasoning contract | None declared | declared |
| Serving providers observed | Amazon Bedrock | measured 21 August 2026 |
Closest measured models
Agreement across the mutually clean test stringsReka Edgerekaai/reka-edge12/50 · 24%Reka Flash 3rekaai/reka-flash-311/46 · 24%Meta: Llama Guard 4 12Bmeta-llama/llama-guard-4-12b9/50 · 18%Mancer: Weaver (alpha)mancer/weaver7/50 · 14%MythoMax 13Bgryphe/mythomax-l2-13b7/50 · 14%Poolside: Laguna S 2.1poolside/laguna-s-2.17/50 · 14%
Click a row to open the full comparison.
The measured fingerprint
Marginal prompt-token cost of each test string, grouped by scriptAll 50 rows
English and whitespace
en-prose15
en-long17
spaces-204
spaces-606
tabs-204
newlines-203
mixed-ws9
Digits
digits-94
digits-125
digits-3011
digits-sep8
float-long10
CJK
zh-common19
zh-long25
zh-rare21
ja-kana12
ja-kanji17
ko20
Other scripts
ru14
ar21
he18
hi23
th25
el22
Emoji
emoji-basic11
emoji-skin26
emoji-zwj-family15
emoji-zwj-x343
emoji-flags25
emoji-prof28
Rare Unicode
math47
boxdraw29
combining6
cjk-ext-b17
surrogates55
zalgo36
rtl-mix10
Code
py-code30
py-indent19
json23
html17
regex52
camel7
snake11
Repetition and encodings
rare-word-x541
repeat-tok21
base6443
hex14
url22
uuid28
An x marks a row excluded as corrupt (caching or provider interference detected during measurement). Overhead subtracted: 7 prompt tokens.
Declared record
What the catalogue claims about this modelClaude 3 Haiku is Anthropic's fastest and most compact model for near-instant responsiveness. Quick and accurate targeted performance. See the launch announcement and benchmark results [here](https://www.anthropic.com/news/claude-3-haiku) #multimodal
- Modalities
- text+image->text
- Declared tokenizer
- Claude
- Prompt price
- $0.25 / M tokens
- Completion price
- $1.25 / M tokens
History
Every observation, kept as taken- 13 March 2024Enters the OpenRouter catalogue declared as Claude.
- 21 August 2026Fingerprinted in the YFarmX catalogue sweep · 50 of 50 strings measured clean.
Cite this page as the evidence record for Anthropic: Claude 3 Haiku: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.