Compare / head-to-head
Claude Opus 4.8vsKimi K2.7 Code
Claude Opus 4.8 leads 5 of 5 shared benchmarks. Claude Opus 4.8 has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
5 – 0
Claude Opus 4.8 leads
Cheaper per token
—
list price, input + output
Larger context
Claude Opus 4.8
1M tokens
Provider uptime (30d)
100% · 100%
Anthropic · Moonshot AI
Claude Opus 4.8
Anthropic · released 2026-05-28
textvision
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
5 shared · 11 only Claude Opus 4.8 · 6 only Kimi K2.7 Code| Benchmark | Claude Opus 4.8 | Kimi K2.7 Code | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 5 | ||||
| GPQA Diamond | 93.6% ↗ | 87.9% ↗epoch | +5.7 pt | Claude Opus 4.8 |
| FrontierMath Tier 4 v2 (Epoch AI run) | 56.1% ↗epoch | 12.2% ↗epoch | +43.9 pt | Claude Opus 4.8 |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 80% ↗epoch | 54% ↗epoch | +26 pt | Claude Opus 4.8 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 98.3% ↗epoch | 95.6% ↗epoch | +2.7 pt | Claude Opus 4.8 |
| SimpleQA Verified | 53% ↗epoch | 36.5% ↗epoch | +16.5 pt | Claude Opus 4.8 |
| Only Claude Opus 4.8 reports · 11 | ||||
| SWE-bench Verified | 88.6% ↗ | not reported | — | — |
| AIME 2026 | 100% ↗matharena ⚠ | not reported | — | — |
| Humanity's Last Exam (no tools) | 49.8% ↗ | not reported | — | — |
| LMArena Elo | 1452.7 ↗ | not reported | — | — |
| BrowseComp | 84.3% ↗ | not reported | — | — |
| Humanity's Last Exam (with tools) | 57.9% ↗ | not reported | — | — |
| OSWorld-Verified | 83.4% ↗ | not reported | — | — |
| SWE-bench Multilingual | 84.4% ↗ | not reported | — | — |
| SWE-bench Multimodal | 38.4% ↗ | not reported | — | — |
| SWE-Bench Pro | 69.2% ↗ | not reported | — | — |
| Terminal-Bench 2.1 | 74.6% ↗ | not reported | — | — |
| Only Kimi K2.7 Code reports · 6 | ||||
| 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% ↗ | — | — |
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 Claude Opus 4.8 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 | Claude Opus 4.8 | Kimi K2.7 Code | Edge |
|---|---|---|---|
| Context window | 1M tokens | 256K tokens | Claude Opus 4.8 |
| Max output | 128K tokens | — | — |
| Input price / 1M | $5 ↗ | — | — |
| Output price / 1M | $25 ↗ | — | — |
| Cached input / 1M | $0.5 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $30 | — | — |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-05-28 | 2026-06-12 | — |
| Cited benchmark scores | 17 | 11 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude Opus 4.8 vs …
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Kimi K2.7 Code vs …
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