Claude Haiku 4.5
Claude Haiku 4.5 is the live cheap / fast Claude row on the models overview, not leftover Claude 3 Haiku. Do not call leftover 3 Haiku the current fast default.
Compare Claude Sonnet 5 if you wanted the live mid-tier 1M row, Claude Opus 5 if you wanted the live Opus path, and leftover Claude 3 Haiku if you still had the old fast bookmark.
Key Features
- Live cheap Claude row: First-party table prints Haiku 4.5 at $1 / $5 and 200k context.
- Not leftover 3 Haiku: The older leftover page stays a previous snapshot.
- Not the 1M default: 1M context on the same table sits on Sonnet 5 / Opus 5 / Fable 5.
- Website is the models overview: Confirm that table before you hard-code an id.
Use Cases
- People who need the current cheap Claude row after leftover 3 Haiku was rewritten.
- People comparing Haiku 4.5 vs Sonnet 5 vs leftover 3 Haiku.
- People who were about to paste 3 Haiku as Anthropic's current fastest model.
Confirm the overview for the exact API id.
Pricing
First-party pages on 2026-08-18.
| Piece | Price | Notes |
|---|---|---|
| Claude Haiku 4.5 | $1 / $5 per 1M | 200k context on the models overview. |
| Claude Sonnet 5 | $2 / $10 per 1M | 1M context. Claude Sonnet 5. |
| Leftover 3 Haiku | Previous snapshot | Claude 3 Haiku. |
If a leftover blog still calls 3 Haiku the current fast Claude, treat this page as the correction.
Getting Started
- Open the models overview and confirm the Haiku 4.5 row.
- Confirm Claude Sonnet 5 if you needed 1M context.
- Confirm leftover Claude 3 Haiku only as a historical bookmark.
- Do not paste leftover 3 Haiku latency copy onto Haiku 4.5.
Frequently Asked Questions
Is this the same as Claude 3 Haiku?
No. Claude 3 Haiku is a leftover previous snapshot.
Is Haiku 4.5 the 1M Claude default?
No. The 1M rows on the same table are Sonnet 5, Opus 5, and Fable 5.
Same as Claude Sonnet 5?
No. Claude Sonnet 5 is the live mid-tier $2 / $10 row.
Alternatives
- Claude Sonnet 5: Live mid-tier 1M Claude row.
- Claude Opus 5: Live Opus path at $5 / $25.
- GPT-5.6 Luna: Live cheap OpenAI sibling if you wandered here for a current low-cost model.
Tips
- Call Haiku 4.5 the live cheap / fast Claude row, not leftover 3 Haiku.
- Confirm the overview for the exact API id before you pin production.
Conclusion
Claude Haiku 4.5 is the live cheap / fast Claude row at $1 / $5 and 200k context. Start at the models overview, then decide whether Claude Sonnet 5 already covers a longer context path.
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