Models · Compare
Claude Haiku 4.5 vs Granite 4.0 Small
Rows highlighted in warm gray are where the models differ. Numbers carry their as-of date and primary source.
Specs
| Field | A: Claude Haiku 4.5 | B: Granite 4.0 Small |
|---|---|---|
| Released | 2025-10-15 | 2025-10-02 |
| Developer | Anthropic | IBM |
| Openness | Proprietary | Open |
| License | Proprietary | Apache-2.0 |
| OSI-approved | no | yes |
| Data released | no | no |
| Training code | no | no |
| Architecture | unknown | hybrid-mamba-transformer-moe |
| Total params | — | 32B |
| Active params | — | 9B |
| Experts | — | — |
| Context window | 200K | 131K |
| Attention | unknown | hybrid-mamba2-transformer |
| Position enc. | unknown | unknown |
| Pretraining tokens | — | — |
| Post-training | rlhf, constitutional | sft, rlhf |
| Training hardware | — | — |
| $/M input | $1.00 | — |
| $/M output | $5.00 | — |
| Output tok/sec | — | — |
Benchmarks
Missing scores render as not reported; never inferred. Bold highlights the leader per benchmark.
Code
| SWE-Bench Verified | 73.3 2025-10-15 | — |
Context · A
Small-tier 4.5 model released October 15 2025 at $1 / $5 per million tokens, one-third the Sonnet 4 price. Anthropic positioned it as matching Sonnet 4 on coding and computer use while running 4-5x faster than Sonnet 4.5. First Haiku to include extended thinking, computer use, and explicit context awareness.
Context · B
IBM's first hybrid Mamba/Transformer release, October 29 2025. Granite-4.0-H-Small is a 32B MoE activating 9B per token, with Mamba-2 and conventional transformer blocks layered 9:1. Shipped alongside H-Tiny (7B / 1B) and H-Micro (3B dense), all base + instruct, all Apache 2.0.