Claude Haiku 4.5 vs Nemotron 3 Ultra 550B-A55B.
Verdict by category, tale of the tape, shared benchmarks only, and cost at three workloads — all from the tracked data.
Verdict by category
| Category | Claude Haiku 4.5 | Nemotron 3 Ultra 550B-A55B | Winner |
|---|---|---|---|
| League Score | 26.9 | 32.3 | Nemotron 3 Ultra 550B-A55B |
| Coding (SWE-bench %) | 73.3 | 71.9 | Claude Haiku 4.5 |
| Reasoning (GPQA %) | — | 87.0 | — |
| Context (tokens) | 200000 | 1000000 | Nemotron 3 Ultra 550B-A55B |
| Speed (tok/s) | — | — | — |
Tale of the tape
| Spec | Claude Haiku 4.5 | Nemotron 3 Ultra 550B-A55B |
|---|---|---|
| Maker | Anthropic | NVIDIA |
| Released | Oct 15, 2025 | Jun 4, 2026 |
| League Score | 27 | 32 |
| Context | 200,000 tokens | 1,000,000 tokens |
| Max output | 64,000 | — |
| $/1M input | $1.00 | — |
| $/1M output | $5.00 | — |
| Weights | Closed | Open |
| Speed | — | — |
Head-to-head benchmarks (shared only)
| Benchmark | Claude Haiku 4.5 | Nemotron 3 Ultra 550B-A55B |
|---|---|---|
| LiveBench overall | 46.0 | 40.8 |
| SWE-bench Verified | 73.3 | 71.9 |
Cost at three workloads
| Workload | Claude Haiku 4.5 | Nemotron 3 Ultra 550B-A55B |
|---|---|---|
| Light — 1M in / 250K out | $2.25 | — |
| Standard — 10M in / 2.5M out | $22.50 | — |
| Long-context — 50M in / 5M out | $75.00 | — |
The pick
Pick Claude Haiku 4.5 if coding is the priority.
Pick Nemotron 3 Ultra 550B-A55B if you want the higher overall League Score; you need the bigger context window; you want downloadable weights / self-hosting.
All figures from the model database — sources and dates on each model page. Cost your own workload or compare a different pair.
Frequently asked questions
Which is better overall, Claude Haiku 4.5 or Nemotron 3 Ultra 550B-A55B?
Nemotron 3 Ultra 550B-A55B leads on overall League Score, 32 to 27 — a gap of 5 points on a composite of sourced benchmarks. That is overall form, not every category: check the per-category verdicts before choosing.
Which is cheaper, Claude Haiku 4.5 or Nemotron 3 Ultra 550B-A55B?
Only Claude Haiku 4.5 has published API pricing in our database ($2.00 blended per 1M tokens); Nemotron 3 Ultra 550B-A55B has no tracked API price, so a like-for-like cost verdict is not possible.
Which has the bigger context window, Claude Haiku 4.5 or Nemotron 3 Ultra 550B-A55B?
Nemotron 3 Ultra 550B-A55B, with 1M of context against 200K for Claude Haiku 4.5.
Which is better for coding, Claude Haiku 4.5 or Nemotron 3 Ultra 550B-A55B?
Claude Haiku 4.5 scores higher on SWE-bench Verified, 73.3% vs 71.9% of real GitHub issues resolved.
Are Claude Haiku 4.5 and Nemotron 3 Ultra 550B-A55B open source?
Claude Haiku 4.5 is closed weights — API access only; Nemotron 3 Ultra 550B-A55B is open weights — it can be downloaded and self-hosted.