# Nova Premier 1.0 vs Step 3.5 Flash

> Step 3.5 Flash is the stronger model overall, scoring 41.7 to 37.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/nova-premier-1-0-vs-step-3-5-flash
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Step 3.5 Flash leads 40.6 to 31.5.
- Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $2.50 / $12.50 for Nova Premier 1.0.
- Nova Premier 1.0 accepts more context: 1M tokens versus 256K.
- Step 3.5 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| Provider | Amazon | StepFun |
| Noometry Index | 37.7 | 41.7 |
| Rank | 185 | 116 |
| Context | 1M | 256K |
| Input $/M | $2.50 | $0.10 |
| Output $/M | $12.50 | $0.30 |
| Weights | Proprietary | Open |

## Coding

- Nova Premier 1.0: —
- Step 3.5 Flash: 41.7 (#106)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | — | 1436 |

## Reasoning

- Nova Premier 1.0: 22.3 (#182)
- Step 3.5 Flash: 21.2 (#202)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| Kagi LLM Benchmark | 44.8% | — |
| NYT Connections (extended) | — | 28.4% |
| LMArena Hard Prompts | — | 1411 |

## Math

- Nova Premier 1.0: 31.5 (#194)
- Step 3.5 Flash: 40.6 (#77)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 66.8% |
| Omni-MATH | 35% | — |
| LMArena Math | — | 1408 |

## Knowledge

- Nova Premier 1.0: 35.4 (#176)
- Step 3.5 Flash: 39.0 (#127)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| MMLU-Pro | 72.6% | — |
| GPQA (HELM) | 51.8% | — |
| LMArena Expert | — | 1422 |

## Multilingual

- Nova Premier 1.0: —
- Step 3.5 Flash: 50.7 (#115)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | — | 1386 |
| LMArena Chinese | — | 1448 |
| LMArena French | — | 1421 |
| LMArena German | — | 1404 |
| LMArena Japanese | — | 1353 |
| LMArena Korean | — | 1350 |
| LMArena Russian | — | 1385 |
| LMArena Spanish | — | 1419 |

## Instruction Following

- Nova Premier 1.0: 66.9 (#201)
- Step 3.5 Flash: 73.3 (#119)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| IFEval | 80.3% | — |
| LMArena Instruction Following | — | 1385 |

## Long Context

- Nova Premier 1.0: —
- Step 3.5 Flash: 42.8 (#112)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | — | 1402 |

## Writing & Preference

- Nova Premier 1.0: 51.0 (#174)
- Step 3.5 Flash: 59.0 (#108)

| Benchmark | Nova Premier 1.0 | Step 3.5 Flash |
|---|---|---|
| LMArena Text | — | 1403 |
| LMArena Creative Writing | — | 1357 |
| WildBench | 78.8% | — |
| LMArena Multi-Turn | — | 1405 |

## FAQ

### Is Nova Premier 1.0 better than Step 3.5 Flash?

Step 3.5 Flash is the stronger model overall, scoring 41.7 to 37.7 on the Noometry Index.

### Which is cheaper, Nova Premier 1.0 or Step 3.5 Flash?

Step 3.5 Flash is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Nova Premier 1.0 lists at $2.50 and $12.50.

### Which has the bigger context window?

Nova Premier 1.0 does, with 1M tokens against 256K.

### How many benchmarks do Nova Premier 1.0 and Step 3.5 Flash share?

0 benchmarks have published results for both models. Nova Premier 1.0 has 6 scored results on Noometry and Step 3.5 Flash has 19.