Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | DeepSeek R1 0528 (May '25) | GLM-5.1 (Non-reasoning) |
|---|---|---|
| Input ($/M tokens) | $1.35 | $1.4 |
| Output ($/M tokens) | $4.2 | $4.4 |
Data from Artificial Analysis API — 12 benchmarks
DeepSeek R1 0528 (May '25) is cheaper overall. Its blended price (3:1 input/output ratio) is $2.06/M tokens vs $2.15/M for GLM-5.1 (Non-reasoning).
It's a tie — both models win 6 benchmarks each across 12 evaluated categories. See the detailed benchmark chart above for per-category results.
GLM-5.1 (Non-reasoning) generates tokens faster at 46 tok/s vs 0 tok/s. DeepSeek R1 0528 (May '25) also has lower time-to-first-token (0.00s vs 1.03s).
Choose based on your priorities: DeepSeek R1 0528 (May '25) for lower cost, both perform similarly on benchmarks, and GLM-5.1 (Non-reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.