Claude Haiku 4.5

Oct 2025
Claude Haiku 4.5
Compare in
on
—per task?
$1 / $5per 1M in / outcache $0.10
91 tok/sfirst token in 0.8 s?
200Kcontext

Rankingin non-thinking mode?

Full ranking →
1Opus 5.561.42Fable 5.159.13Gemini 4 Argon57.14Fable 555.55Sonnet 5.555
···
300Molmo2 8B4.3302Haiku 4.54.2302LFM2 24B A2B4.2

Strong at

B
Knowledge#86 of 318
C
Coding#75 of 132Agents & work tasks#108 of 175Tool calling#142 of 242Reasoning#299 of 334Science#211 of 312Long context#177 of 273Instructions#142 of 245Vision#104 of 124

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperMiMo v2.6 ProthinkingOpen×11.7-73%$0.13Pass back reasoning_content+3BetterGPT-6 Lunalow×4.8-90%$0.005Function calling only with none · Chat Completions+3CheaperMiniMax M3.1 Flashthinking×11.4-87%$0.22Complete model response must be appendedCheaperGemini 3.8 Flashhigh×11.3-25%*$1.24Sampling parameters are ignored+1CheaperStep 5 PreviewthinkingOpen×11-29%$1.03web_search not available · Chat Completions+2

History

3 versions
1020304050Oct 25Jan 26Apr 26Jul 26Oct 26Release dateHumanity's Last Exam4.55.5
1020304050Jan 26Jul 26Release dateHumanity's Last Exam4.55.5

Benchmarks

in Chat & Knowledge
AA Intelligence Index 4.3.2≈15.4#143
AA Omniscience Index-7.6#86
AA Omniscience · Accuracy14.4#243
AA Omniscience · Hallucination Rate25.7#22
Humanity's Last Exam4.2#302
GPQA Diamond64.6#213
AA-LCR (long context) 1.149.7#179
IFBench (instructions)42#143
CritPt (physics)0#180
MLCR-AA4.4#50
AIME 2025 · AA archived39#97

FAQ

How much does Claude Haiku 4.5 cost?›

$1 per 1M input tokens and $5 per 1M output tokens; cached input $0.10 per 1M.

Is Claude Haiku 4.5 free to use?›

There is no free API; the cheapest paid price is $1 per 1M input tokens.

How good is Claude Haiku 4.5, and what is it best at?›

#299 of 334 in Chat & Knowledge, #75 of 132 in Coding, #90 of 133 in Agents & Tool Use, #80 of 195 in Writing & Language, #104 of 124 in Vision & Documents.

Is Claude Haiku 4.5 better than Solar Open 100B?›

On Humanity's Last Exam, Claude Haiku 4.5 scores 10.4 vs 10.4 — about the same.

How can I use Claude Haiku 4.5?›

Through the API of Amazon Bedrock, Anthropic, Azure, DeepInfra, Google.

What is the context window of Claude Haiku 4.5?›

200K tokens, with up to 64K output tokens.

When was Claude Haiku 4.5 released? Is there a newer version?›

Released 2025-10-15. It has been superseded by Claude Haiku 5.5.

Is Claude Haiku 4.5 open source?›

No, Claude Haiku 4.5 is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.

Can Claude Haiku 4.5 read images?›

It accepts text and images, PDF files as input.

What is Claude Haiku 4.5?›

Claude Haiku 4.5 is a closed language model from Anthropic, released Oct 2025.

What are the best alternatives to Claude Haiku 4.5?›

MiMo v2.6 Pro (cheaper), GPT-6 Luna (better).