Claude Haiku 4.5
Anthropic · · 16 days after Claude Sonnet 4.5
Partially verified
0 of 2 published values traced to a source2 primary sources, 2 archived2 not researched yet
Why this status
Cited to the lab's own announcement and official documentation. Not verified because the release date and the context window could not be found in any cited primary source — the value may be correct, but this dataset cannot yet show where it came from.
What these states mean · How records are judged · Has this record changed?
Anthropic's small model tier. The API id claude-haiku-4-5-20251001 carries a snapshot date two weeks before the announcement; the release date is the one Anthropic states.
Details
| Released | October 15, 2025 |
|---|---|
| Company | Anthropic |
| Family | Claude |
| Lineage | before Claude Haiku 5.5 |
| Era | Reasoning models |
| Type | Language model · LLM |
| Modalities | Not recorded |
| Capabilities | Reasoning |
| Weights | Proprietary |
| Licence | Not applicable — proprietary |
| Context window | 200K tokens |
| Parameters | Not researched |
Pricing
The price a lab's own page showed on the day that page was captured. That is what a snapshot can prove; it is not necessarily the launch price, and prices are often cut later. Citing the live pricing page instead would give a number with no date at all.
| Input | $1 per million tokens observed August 17, 2026 · archived snapshot (2026-08-17) |
|---|---|
| Output | $5 per million tokens observed August 17, 2026 · archived snapshot (2026-08-17) |
Current information, elsewhere
This record is a historical one: every figure above is traced to a dated primary source. For what is true today — live pricing, current rankings, availability — these are better maintained than anything here could be.
- Current price and providers OpenRouter ↗
- Current benchmark scores Artificial Analysis ↗
Sources
Record status: partly verified · confidence 60/100 · 2 of 2 primary
Cited to the lab's own announcement and official documentation. Not verified because the release date and the context window could not be found in any cited primary source — the value may be correct, but this dataset cannot yet show where it came from.
- anthropic.com Official announcement archived
- platform.claude.com Official documentation archived
Primary means published by the organisation that made the model. Verified records require at least one.
Claude family
- Claude 1 March 14, 2023
- Claude 2 July 11, 2023
- Claude 3 Opus March 4, 2024
- Claude 3.5 Sonnet June 21, 2024
- Claude 3.7 Sonnet February 24, 2025
- Claude Opus 4 May 22, 2025
- Claude Sonnet 4.5 September 29, 2025
- Claude Haiku 4.5 October 15, 2025
- Claude Opus 4.5 November 24, 2025
- Claude Opus 4.6 February 5, 2026
- Claude Sonnet 4.6 February 17, 2026
- Claude Opus 4.7 April 16, 2026
- Claude Opus 4.8 May 28, 2026
- Claude Fable 5 June 9, 2026
- Claude Mythos 5 June 9, 2026
- Claude Sonnet 5 June 30, 2026
- Claude Opus 5 July 24, 2026
- Claude Fable 5.1 September 1, 2026
- Claude Mythos 5.1 September 1, 2026
- Claude Opus 5.5 September 22, 2026
- Claude Sonnet 5.5 September 28, 2026
- Claude Haiku 5.5 October 7, 2026
Compare Claude Haiku 4.5 with another model →
See Claude Haiku 4.5 on the interactive timeline →