Model comparison
Claude Haiku 4.5 vs Claude 3.5 Haiku
- Input
- $1.00
- Output
- $5.00
- Context
- 200K
- Released
- 2025-10-15
- Input
- $0.80
- Output
- $4.00
- Context
- 200K
- Released
- 2024-10-22
Claude Haiku 4.5 scores higher on 1 of the 1 benchmarks both models report; Claude 3.5 Haiku is cheaper on input tokens ($0.8 vs $1 per 1M, 1.3×).
Specs and pricing side by side
| Spec | Claude Haiku 4.5 | Claude 3.5 Haiku |
|---|---|---|
| Maker | Anthropic | Anthropicsame |
| Released | 2025-10-15 | 2024-10-22 |
| Context window | 200K | 200Ksame |
| Max output | 64K | 8K |
| Input price | $1.00 | $0.80 |
| Output price | $5.00 | $4.00 |
| Parameters | Undisclosed | Undisclosedsame |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision | Text, Visionsame |
| Knowledge cutoff | Feb 2025 | Jul 2024 |
Benchmarks both models report
| Benchmark | Claude Haiku 4.5 | Claude 3.5 Haiku |
|---|---|---|
| SWE-bench Verified | 73.3% | 40.6% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Claude Haiku 4.5 if…
- You care about SWE-bench Verified (it scores higher on 1 shared benchmark).
- Your use case is: reach for it when you need low-latency, high-volume inference such as real-time chat or large fan-out agent fleets.
Pick Claude 3.5 Haiku if…
- Cost matters: input tokens cost 1.3× less ($0.8 vs $1 per 1M).
- Your use case is: reach for it (historically) when you needed low-latency, low-cost inference for user-facing chat, content moderation, or routing.
FAQ
Which is better, Claude Haiku 4.5 or Claude 3.5 Haiku?
Claude Haiku 4.5 scores higher on 1 of the 1 benchmarks both models report; Claude 3.5 Haiku is cheaper on input tokens ($0.8 vs $1 per 1M, 1.3×). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How much cheaper is Claude 3.5 Haiku?
Claude Haiku 4.5: $1.00 input, $5.00 output. Claude 3.5 Haiku: $0.80 input, $4.00 output (list API prices as published by each maker).
What are the context windows of Claude Haiku 4.5 and Claude 3.5 Haiku?
Claude Haiku 4.5 offers 200K with up to 64K output; Claude 3.5 Haiku offers 200K with up to 8K output.
Is Claude Haiku 4.5 newer than Claude 3.5 Haiku?
Claude Haiku 4.5 was released 2025-10-15; Claude 3.5 Haiku was released 2024-10-22.