Model comparison
GPT-5.2 Pro vs Sonar
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 38.5 on the Noometry Index. Sonar costs 58× less per token, which makes it the better buy when GPT-5.2 Pro's lead doesn't matter for your workload.
Last verified . 0 shared benchmarks.
PerplexitySummary
- The widest gap is in math, where GPT-5.2 Pro leads 65.3 to 33.7.
- Sonar is cheaper at $1 / $1 per million input/output tokens, against $21 / $168 for GPT-5.2 Pro.
- GPT-5.2 Pro accepts more context: 400K tokens versus 128K.
Side by side
| GPT-5.2 Pro | Sonar | |
|---|---|---|
| Provider | OpenAI | Perplexity |
| Noometry Index | 52.3 | 38.5 |
| Released | 2025-12-11 | 2024-01-01 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 128K |
| Max output | 128K | 4K |
| Input $ / M tokens | $21 | $1 |
| Output $ / M tokens | $168 | $1 |
| Results tracked | 8 | 7 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Not comparable
GPT-5.2 Pro: —, Sonar: 35.7 (#221)
| Benchmark | GPT-5.2 Pro | Sonar |
|---|---|---|
| LiveBench Coding | — | 35.1% |
Reasoning GPT-5.2 Pro leads
GPT-5.2 Pro: 51.5 (#33), Sonar: 21.1 (#227)
| Benchmark | GPT-5.2 Pro | Sonar |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| LiveBench Reasoning | — | 46.3% |
| LiveBench Data Analysis | — | 37.9% |
| Epoch Capabilities Index | 155.4 | — |
| LiveBench | — | 46.9% |
Math GPT-5.2 Pro leads
GPT-5.2 Pro: 65.3 (#29), Sonar: 33.7 (#200)
| Benchmark | GPT-5.2 Pro | Sonar |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| LiveBench Math | — | 41.6% |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Instruction Following Not comparable
GPT-5.2 Pro: —, Sonar: 71.4 (#150)
| Benchmark | GPT-5.2 Pro | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
Writing & Preference Not comparable
GPT-5.2 Pro: —, Sonar: 52.6 (#167)
| Benchmark | GPT-5.2 Pro | Sonar |
|---|---|---|
| LiveBench Language | — | 44.1% |
Frequently asked questions
Is GPT-5.2 Pro better than Sonar?
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 38.5 on the Noometry Index. Sonar costs 58× less per token, which makes it the better buy when GPT-5.2 Pro's lead doesn't matter for your workload.
Which is cheaper, GPT-5.2 Pro or Sonar?
Sonar is cheaper. It lists at $1 per million input tokens and $1 per million output tokens; GPT-5.2 Pro lists at $21 and $168.
Which has the bigger context window?
GPT-5.2 Pro does, with 400K tokens against 128K.
How many benchmarks do GPT-5.2 Pro and Sonar share?
0 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and Sonar has 7.