Pairwise benchmark snapshot · Aug 16, 2026
This page compares Grok 4.6 (xAI) and Kimi Chat 1.5 (Moonshot) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Grok 4.6 is ahead by 172 points (1,592 vs 1,420; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Grok 4.6 resolves 69.1% versus 51% (seed-bootstrap (Aug 16, 2026)). Grok 4.6 streams faster (118 tok/s) while Kimi Chat 1.5 is the cheaper output token ($0.8/1M). Kimi Chat 1.5 has the larger context window (2M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.
xAI
Grok 4.6xAI Aug 12 2026 post-training refresh of Grok 4.5. Same $2/$6 API price, 500k context, stronger agentic traces.
Moonshot
Kimi Chat 1.5Moonshot ultra-long context model supporting up to 2 million tokens per request.
Instant pairwise benchmark recalculation across 400+ LLMs
Category wins across intelligence, speed, and pricing efficiency.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
172 pts advantage
23 tok/s faster
$5.20/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
Kimi Chat 1.5 is estimated to save $141.00/month ($1,692/year).
Higher SWE-bench (69.1%).
Lower output list price ($0.8/1M).
Lower TTFT (195 ms).
Larger window (2M).
Grok 4.6 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Grok 4.6 | Higher SWE-bench (69.1%). |
| High-volume chat | Kimi Chat 1.5 | Lower output list price ($0.8/1M). |
| Voice / low-latency UI | Grok 4.6 | Lower TTFT (195 ms). |
| Long-document RAG | Kimi Chat 1.5 | Larger window (2M). |
| Screenshots / vision | Grok 4.6 | Grok 4.6 is the side marked multimodal in the catalog. |
Brand hub remaps to top xAI vs top OpenAI. After Aug 12 that is Grok 4.6 vs Sol.
xAI’s Aug 12 2026 refresh of Grok 4.5. 500k context. The Grok vs ChatGPT hub remaps here.
2025-07 row. 4.6 is the buy. We keep 4 so upgrade pairs and old inbound links resolve.
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The real PNG is generated at /compare/grok-4-6-vs-kimi-1-5-long/opengraph-image for crawlers.
Verified head-to-head card
