Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Claude Sonnet 5 delivers higher overall intelligence and human-preferred responses (Elo 1,556 vs 1,492), while Claude Sonnet 5 leads in SWE-bench software engineering benchmarks (73.8%), while GLM-5.2 is more budget-friendly at $3.74/1M per 1M output tokens, while Claude Sonnet 5 provides faster response streaming (118 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 direct benchmark disciplines evaluated across capability, speed, and cost
Anthropic workhorse. Official $2/$10 per 1M tokens made permanent on Aug 10 2026.
Zhipu flagship. Strong Chinese/English coding and agents.
Currently comparing Claude Sonnet 5 vs GLM-5.2. Alternative family tiers available.
Δ 64 Arena Elo pts
118 tok/s
$3.74 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
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
| Benchmark | Claude Sonnet 5 | GLM-5.2 | Advantage Delta |
|---|---|---|---|
| Preference Elo | +64 | ||
| Coding Elo | +58 | ||
| LiveBench | +5.2% | ||
| SWE-bench | +4.5% | ||
| GPQA Diamond | +3.3% | ||
| Time to first token | +95 ms | ||
| Output speed | 118 tok/s | 84 tok/s | +34 tok/s |
| Input price | $1.19/1M | +$0.81/1M | |
| Output price | $3.74/1M | +$6.26/1M | |
| Context window | +49k |
Simulate monthly production API costs in USD (US Dollar).
GLM-5.2 is estimated to save $122.25/month ($1,467/year).
Higher SWE-bench (73.8%).
Lower output list price ($3.74/1M).
Lower TTFT (175 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 5).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Sonnet 5 | Higher SWE-bench (73.8%). |
| High-volume chat | GLM-5.2 | Lower output list price ($3.74/1M). |
| Voice / low-latency UI | Claude Sonnet 5 | Lower TTFT (175 ms). |
| Long-document RAG | GLM-5.2 | Larger window (1M). |
| Screenshots / vision | Claude Sonnet 5 | Both accept images. Defaulting to the higher-Elo side (Claude Sonnet 5). |
GLM-5.2 undercuts GLM 5V Turbo by 74.2% on input at $0.31/1M, with 1,492 Elo and 69.3% SWE-bench in dated 2026 snapshots.
Usually Sonnet 5 vs Opus 5. Coding delta versus output $/1M. The workhorse question.
Aug 10 2026 made the $2/$10 list permanent. Sonnet is the default Claude unless the repo is actually on fire.
Strong Chinese/English coding. 5.3 is the new row; 5.2 stays so the delta is visible.
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Verified Head-to-Head Telemetry
