Compare / head-to-head
Grok 4.5vsKimi K2.6
Grok 4.5 leads 3 of 6 shared benchmarks. Grok 4.5 has the larger context window (500K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
3 – 2
Grok 4.5 leads · 1 tied
Cheaper per token
—
list price, input + output
Larger context
Grok 4.5
500K tokens
Provider uptime (30d)
— · 100%
xAI · Moonshot AI
Grok 4.5
xAI · released 2026-07-08
textvision
Kimi K2.6
Moonshot AI · released 2026-04-20
textvision
- Context
- 256K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 14 · 8 core
Quality
Benchmark matrix
6 shared · 0 only Grok 4.5 · 8 only Kimi K2.6| Benchmark | Grok 4.5 | Kimi K2.6 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 6 | ||||
| GPQA Diamond | 93.4% ↗epoch | 90.8% ↗epoch | +2.6 pt | Grok 4.5 |
| LMArena Elo | 1450.1 ↗ | 1454.9 ↗ | -4.8 | Kimi K2.6 |
| FrontierMath Tier 4 v2 (Epoch AI run) | 24.4% ↗epoch | 25.6% ↗epoch | -1.2 pt | Kimi K2.6 |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 57.2% ↗epoch | 57.2% ↗epoch | 0 | Tie |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 97.8% ↗epoch | 96.1% ↗epoch | +1.7 pt | Grok 4.5 |
| SimpleQA Verified | 48.3% ↗epoch | 34.9% ↗epoch | +13.4 pt | Grok 4.5 |
| Only Grok 4.5 reports · 0 | ||||
| Grok 4.5 reports nothing Kimi K2.6 does not. | ||||
| Only Kimi K2.6 reports · 8 | ||||
| AIME 2026 | not reported | 95.8% ↗matharena ⚠ | — | — |
| Kimi Claw 24/7 Bench | not reported | 42.9% ↗ | — | — |
| Kimi Code Bench v2 | not reported | 50.9% ↗ | — | — |
| MCP-Atlas | not reported | 69.4% ↗ | — | — |
| MCPMark-Verified | not reported | 72.8% ↗ | — | — |
| MLS-Bench-Lite | not reported | 26.7% ↗ | — | — |
| ProgramBench | not reported | 48.3% ↗ | — | — |
| SWE-bench Verified (Epoch AI run) | not reported | 76.7% ↗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 Grok 4.5 minus Kimi K2.6 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 | Grok 4.5 | Kimi K2.6 | Edge |
|---|---|---|---|
| Context window | 500K tokens | 256K tokens | Grok 4.5 |
| Max output | — | — | — |
| Input price / 1M | $2 ↗ | — | — |
| Output price / 1M | $6 ↗ | — | — |
| Cached input / 1M | $0.3 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $8 | — | — |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-07-08 | 2026-04-20 | — |
| Cited benchmark scores | 6 | 14 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Grok 4.5 vs …
Models sharing the most benchmarksMore matchups
Kimi K2.6 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Grok 4.5 and Kimi K2.6 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.