Pairwise benchmark snapshot · Aug 17, 2026
This page compares Z.ai: GLM 5V Turbo (Zhipu) and GPT-5.6 Luna (OpenAI) using the latest snapshots we have as of Aug 17, 2026. On preference Elo, Z.ai: GLM 5V Turbo is ahead by 9 points (1,475 vs 1,466; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Z.ai: GLM 5V Turbo resolves 65.2% versus 61.8% (seed-bootstrap (Aug 1, 2026)). GPT-5.6 Luna streams faster (188 tok/s) while GPT-5.6 Luna is the cheaper output token ($0.6/1M). GPT-5.6 Luna has the larger context window (1.1M 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.
Zhipu
Z.ai: GLM 5V TurboAuto-discovered from OpenRouter (z-ai/glm-5v-turbo). Preview until a second source matches.
OpenAI
GPT-5.6 LunaOpenAI 5.6 fast/cheap tier. Official API $0.20/$1.20 per 1M after the Jul 30 80% Luna cut.
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.
9 pts advantage
76 tok/s faster
$3.40/1M cheaper
Simulate monthly production API costs based on published $/1M tokens.
GPT-5.6 Luna is estimated to save $89.50/month ($1,074/year).
Higher SWE-bench (65.2%).
Lower output list price ($0.6/1M).
Lower TTFT (88 ms).
Larger window (1.1M).
Both accept images. Defaulting to the higher-Elo side (Z.ai: GLM 5V Turbo).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Z.ai: GLM 5V Turbo | Higher SWE-bench (65.2%). |
| High-volume chat | GPT-5.6 Luna | Lower output list price ($0.6/1M). |
| Voice / low-latency UI | GPT-5.6 Luna | Lower TTFT (88 ms). |
| Long-document RAG | GPT-5.6 Luna | Larger window (1.1M). |
| Screenshots / vision | Z.ai: GLM 5V Turbo | Both accept images. Defaulting to the higher-Elo side (Z.ai: GLM 5V Turbo). |
Luna is the OpenAI fast/cheap 5.6 SKU after Jul 30. It is not Sol. Sort by price and TTFT, not Elo.
High-volume agents that cannot pay Sol. Compare to Luna before you assume the new cheap SKU wins.
No comments posted on this matchup yet. Be the first to share an evaluation note!
The real PNG is generated at /compare/glm-5v-turbo-vs-gpt-5-6-luna/opengraph-image for crawlers.
Verified head-to-head card
