Claude Haiku 4.5: release date and what it's for
Released , according to Anthropic's announcement. The cheap end of the Claude line, and the only current one still on a 200K window rather than a million.
- Status
- Live
- Released
- Lab
- Anthropic
- Input
- $1per million tokens
- Output
- $5per million tokens
- Context window
- 200Ktokens
- Max output
- 64Ktokens
API model ID: claude-haiku-4-5-20251001
Explained: Claude models explained: Opus 5.5, Fable 5.1, Mythos and why there's no Opus 5.1
What we've written about Claude Haiku 4.5
Jay Clayton says Trump's AI task force formed three subcommittees at its first meeting
The intelligence chief who runs Trump's AI task force spent most of his first interview about it on spying.
Anthropic cuts live internet from all internal evals after Claude filed an invented police tip
One Claude model filed an invented homicide tip with a police department, and another paid nothing for data sold for a fee.
Claude Haiku 5.5 cuts prices up to 90% and tops GPT-6 Luna in Anthropic's own tests
Most requests now cost a tenth of what Haiku 4.5 charged, and the small model gets an effort dial for the first time.
The day after agreeing AI should slow down, Musk said Grok 4.8 finishes training this week
Grok 4.7 still isn't out, Grok 5 is his answer for AGI, and neither OpenAI nor Anthropic lists a size to set 2.5T against.
How Claude Haiku 4.5 compares on price and context
inputoutput
- Claude Mythos 5.1$10 / $50
- Claude Fable 5.1$10 / $50
- GPT-6 Astra$10 / $50
- Claude Opus 5.5$4 / $20
- Claude Haiku 4.5$1 / $5
- Muse Spark 1.3$1.25 / $4.25
- Gemini 3.8 Flash$0.75 / $3.75
how much it reads at once
- GPT-6 Astra1.05M
- Muse Spark 1.31.05M
- Gemini 3.8 Flash1.05M
- Claude Opus 5.51M
- Claude Mythos 5.11M
- Claude Fable 5.11M
- Claude Haiku 4.5200K
Next to the newest Anthropic models and the current model from other labs. Prices are in US dollars per million tokens.
What is Claude Haiku 4.5?
Claude Haiku 4.5 is a model from Anthropic, built in the US. It's out, and you can use it today.
When did Claude Haiku 4.5 come out?
Anthropic released it on October 15, 2025. That date comes from Anthropic's announcement.
More from Anthropic
Claude Opus 5.5
- in /1M
- $4
- out /1M
- $20
- context
- 1M
Claude Mythos 5.1
- in /1M
- $10
- out /1M
- $50
- context
- 1M
Claude Fable 5.1
- in /1M
- $10
- out /1M
- $50
- context
- 1M
Claude Opus 5
- in /1M
- $5
- out /1M
- $25
- context
- 1M
Claude Sonnet 5
- in /1M
- $2
- out /1M
- $10
- context
- 1M
Claude Fable 5
- in /1M
- $10
- out /1M
- $50
- context
- 1M
Claude Sonnet 4.5
- in /1M
- $3
- out /1M
- $15
- context
- 200K
More news: Anthropic news and Claude updates
.