Model comparison
Kimi K2.7 Code vs Solar Pro4
Kimi K2.7 Code is the stronger model overall, scoring 43.3 to 42.1 on the Noometry Index. Solar Pro4 costs 3.3× less per token, which makes it the better buy when Kimi K2.7 Code's lead doesn't matter for your workload.
Last verified . 1 shared benchmarks.
UpstageSummary
- They share 1 benchmark with published results for both. Kimi K2.7 Code scores higher in 4 categories and Solar Pro4 in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2.7 Code leads 52.9 to 38.8.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $0.95 / $4 for Kimi K2.7 Code.
- Solar Pro4 accepts more context: 524K tokens versus 262K.
- Kimi K2.7 Code has downloadable open weights; the other is API-only.
Side by side
| Kimi K2.7 Code | Solar Pro4 | |
|---|---|---|
| Provider | Moonshot AI | Upstage |
| Noometry Index | 43.3 | 42.1 |
| Released | 2026-06-12 | 2026-08-06 |
| Weights | Open | Proprietary |
| Context window | 262K | 524K |
| Max output | 262K | 131K |
| Input $ / M tokens | $0.95 | $0.30 |
| Output $ / M tokens | $4 | $1.20 |
| Results tracked | 19 | 18 |
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Category by category
Coding Kimi K2.7 Code leads
Kimi K2.7 Code: 42.9 (#95), Solar Pro4: 40.1 (#149)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| LMArena WebDev | 1473 | 1371 |
| DeepSWE | 30.5% | — |
| FrontierCode | 30.1% | — |
| SciCode | 47.5% | — |
| WeirdML | 54.1% | — |
| LMArena Coding | — | 1437 |
| ALE-Bench | 886.23 | — |
Agentic & Tool Use Not comparable
Kimi K2.7 Code: 24.0 (#122), Solar Pro4: —
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| 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), Solar Pro4: 28.5 (#104)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| SimpleBench | 57.9% | — |
| CritPt | 10% | — |
| Chess Puzzles | 21% | — |
| LMArena Hard Prompts | — | 1399 |
| Surface Evolver Bench | 48.8% | — |
| Epoch Capabilities Index | 149.97 | — |
Math Kimi K2.7 Code leads
Kimi K2.7 Code: 52.9 (#48), Solar Pro4: 38.8 (#128)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 54% | — |
| FrontierMath Tier 4 | 12.2% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| LMArena Math | — | 1416 |
Knowledge Kimi K2.7 Code leads
Kimi K2.7 Code: 53.5 (#57), Solar Pro4: 39.8 (#129)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| GPQA Diamond | 87.9% | — |
| SimpleQA Verified | 36.5% | — |
| LMArena Expert | — | 1427 |
Multilingual Not comparable
Kimi K2.7 Code: —, Solar Pro4: 48.7 (#139)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| LMArena Non-English | — | 1361 |
| LMArena Chinese | — | 1415 |
| LMArena French | — | 1397 |
| LMArena German | — | 1364 |
| LMArena Japanese | — | 1309 |
| LMArena Korean | — | 1382 |
| LMArena Russian | — | 1360 |
| LMArena Spanish | — | 1401 |
Instruction Following Not comparable
Kimi K2.7 Code: —, Solar Pro4: 72.7 (#132)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | — | 1377 |
Long Context Not comparable
Kimi K2.7 Code: —, Solar Pro4: 42.1 (#130)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | — | 1381 |
Writing & Preference Not comparable
Kimi K2.7 Code: —, Solar Pro4: 56.5 (#138)
| Benchmark | Kimi K2.7 Code | Solar Pro4 |
|---|---|---|
| LMArena Text | — | 1386 |
| LMArena Creative Writing | — | 1316 |
| LMArena Multi-Turn | — | 1385 |
Frequently asked questions
Is Kimi K2.7 Code better than Solar Pro4?
Kimi K2.7 Code is the stronger model overall, scoring 43.3 to 42.1 on the Noometry Index. Solar Pro4 costs 3.3× less per token, which makes it the better buy when Kimi K2.7 Code's lead doesn't matter for your workload.
Which is cheaper, Kimi K2.7 Code or Solar Pro4?
Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Kimi K2.7 Code lists at $0.95 and $4.
Is Kimi K2.7 Code or Solar Pro4 better for coding?
Kimi K2.7 Code scores higher on coding benchmarks: 42.9 versus 40.1 in the Noometry coding category.
Which has the bigger context window?
Solar Pro4 does, with 524K tokens against 262K.
How many benchmarks do Kimi K2.7 Code and Solar Pro4 share?
1 benchmark has published results for both models. Kimi K2.7 Code has 19 scored results on Noometry and Solar Pro4 has 18.