Model comparison
GLM-5.3 vs Sonar Reasoning Pro
GLM-5.3 has enough public results to be ranked (#25); Sonar Reasoning Pro does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
PerplexitySummary
- GLM-5.3 is cheaper at $1.40 / $4.40 per million input/output tokens, against $2 / $8 for Sonar Reasoning Pro.
- GLM-5.3 accepts more context: 1M tokens versus 128K.
- GLM-5.3 has downloadable open weights; the other is API-only.
Side by side
| GLM-5.3 | Sonar Reasoning Pro | |
|---|---|---|
| Provider | Z.ai (Zhipu) | Perplexity |
| Noometry Index | 54.6 | — |
| Released | 2026-08-14 | 2024-01-01 |
| Weights | Open | Proprietary |
| Context window | 1M | 128K |
| Max output | 131K | 4K |
| Input $ / M tokens | $1.40 | $2 |
| Output $ / M tokens | $4.40 | $8 |
| Results tracked | 41 | 1 |
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Category by category
Coding Not comparable
GLM-5.3: 59.0 (#12), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| DeepSWE | 69% | — |
| FrontierCode | 40.1% | — |
| LMArena WebDev | 1623 | — |
| FrontierSWE | 30.2% | — |
| SciCode | 59% | — |
| WeirdML | 75.4% | — |
| LMArena Coding | 1499 | — |
| ALE-Bench | 1,317 | — |
Agentic & Tool Use Not comparable
GLM-5.3: 36.3 (#34), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| APEX-Agents | 56.6% | — |
| LMArena Search | — | 1139 |
| Vending-Bench 2 | 8,164 | — |
Reasoning Not comparable
GLM-5.3: 45.2 (#42), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| NYT Connections (extended) | 74.2% | — |
| CritPt | 19.1% | — |
| Chess Puzzles | 21% | — |
| LMArena Hard Prompts | 1491 | — |
| Mystery Game Puzzles | 33% | — |
| DTBench | 87.7% | — |
| LMCA | 55.5% | — |
| Bench to the Future 3 | 0.15 | — |
| Epoch Capabilities Index | 155.56 | — |
Math Not comparable
GLM-5.3: 62.1 (#27), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 68.8% | — |
| FrontierMath Tier 4 | 29.3% | — |
| OTIS Mock AIME 2024-2025 | 91.1% | — |
| ProofBench | 49% | — |
| LMArena Math | 1493 | — |
Knowledge Not comparable
GLM-5.3: 58.3 (#34), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| GPQA Diamond | 90.9% | — |
| SimpleQA Verified | 41% | — |
| LMArena Expert | 1512 | — |
Multilingual Not comparable
GLM-5.3: 55.9 (#27), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| LMArena Non-English | 1457 | — |
| LMArena Chinese | 1523 | — |
| LMArena French | 1499 | — |
| LMArena German | 1505 | — |
| LMArena Japanese | 1438 | — |
| LMArena Korean | 1478 | — |
| LMArena Russian | 1460 | — |
| LMArena Spanish | 1444 | — |
Instruction Following Not comparable
GLM-5.3: 77.8 (#15), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| LMArena Instruction Following | 1481 | — |
Long Context Not comparable
GLM-5.3: 45.5 (#32), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| LMArena Longer Query | 1485 | — |
Writing & Preference Not comparable
GLM-5.3: 75.9 (#6), Sonar Reasoning Pro: —
| Benchmark | GLM-5.3 | Sonar Reasoning Pro |
|---|---|---|
| LMArena Text | 1473 | — |
| LMArena Creative Writing | 1459 | — |
| EQ-Bench Creative Writing | 2075 | — |
| LMArena Multi-Turn | 1473 | — |
Frequently asked questions
Is GLM-5.3 better than Sonar Reasoning Pro?
GLM-5.3 has enough public results to be ranked (#25); Sonar Reasoning Pro does not yet, so treat this comparison as directional.
Which is cheaper, GLM-5.3 or Sonar Reasoning Pro?
GLM-5.3 is cheaper. It lists at $1.40 per million input tokens and $4.40 per million output tokens; Sonar Reasoning Pro lists at $2 and $8.
Which has the bigger context window?
GLM-5.3 does, with 1M tokens against 128K.
How many benchmarks do GLM-5.3 and Sonar Reasoning Pro share?
0 benchmarks have published results for both models. GLM-5.3 has 41 scored results on Noometry and Sonar Reasoning Pro has 1.