Model comparison
Kimi K2.7 Code vs Step 2 16k Exp 202412
Kimi K2.7 Code is the stronger model overall, scoring 43.3 to 39.2 on the Noometry Index.
Last verified . 0 shared benchmarks.
StepFunSummary
- The widest gap is in knowledge, where Kimi K2.7 Code leads 53.5 to 35.2.
- Kimi K2.7 Code has downloadable open weights; the other is API-only.
Side by side
| Kimi K2.7 Code | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | Moonshot AI | StepFun |
| Noometry Index | 43.3 | 39.2 |
| Released | 2026-06-12 | — |
| Weights | Open | Proprietary |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.95 | — |
| Output $ / M tokens | $4 | — |
| Results tracked | 19 | 12 |
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Category by category
Coding Kimi K2.7 Code leads
Kimi K2.7 Code: 42.9 (#95), Step 2 16k Exp 202412: 38.5 (#174)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| DeepSWE | 30.5% | — |
| FrontierCode | 30.1% | — |
| LMArena WebDev | 1473 | — |
| SciCode | 47.5% | — |
| WeirdML | 54.1% | — |
| LMArena Coding | — | 1316 |
| ALE-Bench | 886.23 | — |
Agentic & Tool Use Not comparable
Kimi K2.7 Code: 24.0 (#122), Step 2 16k Exp 202412: —
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| APEX-Agents | 37.6% | — |
| GBAEval | 0.9% | — |
| Vending-Bench 2 | 5,083 | — |
Reasoning Kimi K2.7 Code leads
Kimi K2.7 Code: 39.0 (#61), Step 2 16k Exp 202412: 25.9 (#142)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| SimpleBench | 57.9% | — |
| CritPt | 10% | — |
| Chess Puzzles | 21% | — |
| LMArena Hard Prompts | — | 1299 |
| Surface Evolver Bench | 48.8% | — |
| Epoch Capabilities Index | 149.97 | — |
Math Kimi K2.7 Code leads
Kimi K2.7 Code: 52.9 (#48), Step 2 16k Exp 202412: 36.3 (#169)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 54% | — |
| FrontierMath Tier 4 | 12.2% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| LMArena Math | — | 1304 |
Knowledge Kimi K2.7 Code leads
Kimi K2.7 Code: 53.5 (#57), Step 2 16k Exp 202412: 35.2 (#187)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| GPQA Diamond | 87.9% | — |
| SimpleQA Verified | 36.5% | — |
| LMArena Expert | — | 1279 |
Multilingual Not comparable
Kimi K2.7 Code: —, Step 2 16k Exp 202412: 43.7 (#181)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | — | 1290 |
| LMArena Chinese | — | 1331 |
| LMArena Russian | — | 1324 |
Instruction Following Not comparable
Kimi K2.7 Code: —, Step 2 16k Exp 202412: 67.9 (#192)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | — | 1287 |
Long Context Not comparable
Kimi K2.7 Code: —, Step 2 16k Exp 202412: 39.7 (#170)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | — | 1307 |
Writing & Preference Not comparable
Kimi K2.7 Code: —, Step 2 16k Exp 202412: 52.3 (#173)
| Benchmark | Kimi K2.7 Code | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | — | 1321 |
| LMArena Creative Writing | — | 1328 |
| LMArena Multi-Turn | — | 1292 |
Frequently asked questions
Is Kimi K2.7 Code better than Step 2 16k Exp 202412?
Kimi K2.7 Code is the stronger model overall, scoring 43.3 to 39.2 on the Noometry Index.
Is Kimi K2.7 Code or Step 2 16k Exp 202412 better for coding?
Kimi K2.7 Code scores higher on coding benchmarks: 42.9 versus 38.5 in the Noometry coding category.
How many benchmarks do Kimi K2.7 Code and Step 2 16k Exp 202412 share?
0 benchmarks have published results for both models. Kimi K2.7 Code has 19 scored results on Noometry and Step 2 16k Exp 202412 has 12.