Compare / head-to-head
gpt-oss-20bvsKimi K2.7 Code
Kimi K2.7 Code leads 2 of 2 shared benchmarks. Kimi K2.7 Code has the larger context window (256K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 2
Kimi K2.7 Code leads
Cheaper per token
—
list price, input + output
Larger context
Kimi K2.7 Code
256K tokens
Provider uptime (30d)
94.2446% · 100%
OpenAI · Moonshot AI
gpt-oss-20b
OpenAI · released 2025-08-05
text
- Context
- 131K
- Max out
- 131K
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 6 · 5 core
Kimi K2.7 Code
Moonshot AI · released 2026-06-12
textvision
- Context
- 256K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 11 · 5 core
Quality
Benchmark matrix
2 shared · 3 only gpt-oss-20b · 9 only Kimi K2.7 Code| Benchmark | gpt-oss-20b | Kimi K2.7 Code | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| GPQA Diamond | 71.5% ↗ | 87.9% ↗epoch | -16.4 pt | Kimi K2.7 Code |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 65.3% ↗epoch | 95.6% ↗epoch | -30.3 pt | Kimi K2.7 Code |
| Only gpt-oss-20b reports · 3 | ||||
| SWE-bench Verified | 60.7% ↗ | not reported | — | — |
| AIME 2025 | 89.2% ↗matharena ⚠ | not reported | — | — |
| LMArena Elo | 1287.3 ↗ | not reported | — | — |
| Only Kimi K2.7 Code reports · 9 | ||||
| FrontierMath Tier 4 v2 (Epoch AI run) | not reported | 12.2% ↗epoch | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | not reported | 54% ↗epoch | — | — |
| Kimi Claw 24/7 Bench | not reported | 46.9% ↗ | — | — |
| Kimi Code Bench v2 | not reported | 62% ↗ | — | — |
| MCP-Atlas | not reported | 76% ↗ | — | — |
| MCPMark-Verified | not reported | 81.1% ↗ | — | — |
| MLS-Bench-Lite | not reported | 35.1% ↗ | — | — |
| ProgramBench | not reported | 53.6% ↗ | — | — |
| SimpleQA Verified | not reported | 36.5% ↗epoch | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is gpt-oss-20b minus Kimi K2.7 Code in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | gpt-oss-20b | Kimi K2.7 Code | Edge |
|---|---|---|---|
| Context window | 131K tokens | 256K tokens | Kimi K2.7 Code |
| Max output | 131K tokens | — | — |
| Input price / 1M | — | — | — |
| Output price / 1M | — | — | — |
| Cached input / 1M | — | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | — | — | — |
| Modalities | text | text · vision | Kimi K2.7 Code |
| Released | 2025-08-05 | 2026-06-12 | — |
| Cited benchmark scores | 6 | 11 | — |
Reliability
Provider status
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