Model comparison
Kimi K2.5 Instant vs Nova Premier 1.0
Kimi K2.5 Instant is the stronger model overall, scoring 42.9 to 37.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in writing & preference, where Kimi K2.5 Instant leads 60.8 to 51.0.
- Kimi K2.5 Instant has downloadable open weights; the other is API-only.
Side by side
| Kimi K2.5 Instant | Nova Premier 1.0 | |
|---|---|---|
| Provider | Moonshot AI | Amazon |
| Noometry Index | 42.9 | 37.7 |
| Released | — | 2025-04-30 |
| Weights | Open | Proprietary |
| Context window | — | 1M |
| Max output | — | 10K |
| Input $ / M tokens | — | $2.50 |
| Output $ / M tokens | — | $12.50 |
| Results tracked | 18 | 6 |
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Category by category
Coding Not comparable
Kimi K2.5 Instant: 42.3 (#95), Nova Premier 1.0: —
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| LMArena WebDev | 1404 | — |
| LMArena Coding | 1483 | — |
Reasoning Kimi K2.5 Instant leads
Kimi K2.5 Instant: 28.5 (#88), Nova Premier 1.0: 22.3 (#182)
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| Kagi LLM Benchmark | — | 44.8% |
| LMArena Hard Prompts | 1443 | — |
Math Kimi K2.5 Instant leads
Kimi K2.5 Instant: 36.6 (#105), Nova Premier 1.0: 31.5 (#194)
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| Omni-MATH | — | 35% |
| LMArena Math | 1443 | — |
Knowledge Kimi K2.5 Instant leads
Kimi K2.5 Instant: 39.5 (#121), Nova Premier 1.0: 35.4 (#176)
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| MMLU-Pro | — | 72.6% |
| GPQA (HELM) | — | 51.8% |
| LMArena Expert | 1438 | — |
Multimodal Not comparable
Kimi K2.5 Instant: 39.5 (#47), Nova Premier 1.0: —
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| LMArena Vision | 1254 | — |
Multilingual Not comparable
Kimi K2.5 Instant: 52.2 (#89), Nova Premier 1.0: —
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| LMArena Non-English | 1406 | — |
| LMArena Chinese | 1450 | — |
| LMArena French | 1403 | — |
| LMArena German | 1413 | — |
| LMArena Korean | 1378 | — |
| LMArena Russian | 1404 | — |
| LMArena Spanish | 1448 | — |
Instruction Following Kimi K2.5 Instant leads
Kimi K2.5 Instant: 75.5 (#61), Nova Premier 1.0: 66.9 (#201)
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| IFEval | — | 80.3% |
| LMArena Instruction Following | 1430 | — |
Long Context Not comparable
Kimi K2.5 Instant: 43.8 (#82), Nova Premier 1.0: —
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| LMArena Longer Query | 1435 | — |
Writing & Preference Kimi K2.5 Instant leads
Kimi K2.5 Instant: 60.8 (#91), Nova Premier 1.0: 51.0 (#174)
| Benchmark | Kimi K2.5 Instant | Nova Premier 1.0 |
|---|---|---|
| LMArena Text | 1420 | — |
| LMArena Creative Writing | 1379 | — |
| WildBench | — | 78.8% |
| LMArena Multi-Turn | 1427 | — |
Frequently asked questions
Is Kimi K2.5 Instant better than Nova Premier 1.0?
Kimi K2.5 Instant is the stronger model overall, scoring 42.9 to 37.7 on the Noometry Index.
How many benchmarks do Kimi K2.5 Instant and Nova Premier 1.0 share?
0 benchmarks have published results for both models. Kimi K2.5 Instant has 18 scored results on Noometry and Nova Premier 1.0 has 6.