Model comparison
GPT-5.2 Pro vs Solar Pro4
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 42.1 on the Noometry Index. Solar Pro4 costs 110× 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.
UpstageSummary
- The widest gap is in math, where GPT-5.2 Pro leads 65.3 to 38.8.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $21 / $168 for GPT-5.2 Pro.
- Solar Pro4 accepts more context: 524K tokens versus 400K.
Side by side
| GPT-5.2 Pro | Solar Pro4 | |
|---|---|---|
| Provider | OpenAI | Upstage |
| Noometry Index | 52.3 | 42.1 |
| Released | 2025-12-11 | 2026-08-06 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 524K |
| Max output | 128K | 131K |
| Input $ / M tokens | $21 | $0.30 |
| Output $ / M tokens | $168 | $1.20 |
| Results tracked | 8 | 18 |
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Category by category
Coding Not comparable
GPT-5.2 Pro: —, Solar Pro4: 40.1 (#149)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| LMArena WebDev | — | 1371 |
| LMArena Coding | — | 1437 |
Reasoning GPT-5.2 Pro leads
GPT-5.2 Pro: 51.5 (#33), Solar Pro4: 28.5 (#104)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| LMArena Hard Prompts | — | 1399 |
| Epoch Capabilities Index | 155.4 | — |
Math GPT-5.2 Pro leads
GPT-5.2 Pro: 65.3 (#29), Solar Pro4: 38.8 (#128)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| LMArena Math | — | 1416 |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Knowledge Not comparable
GPT-5.2 Pro: —, Solar Pro4: 39.8 (#129)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| LMArena Expert | — | 1427 |
Multilingual Not comparable
GPT-5.2 Pro: —, Solar Pro4: 48.7 (#139)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| LMArena Non-English | — | 1361 |
| LMArena Chinese | — | 1415 |
| LMArena French | — | 1397 |
| LMArena German | — | 1364 |
| LMArena Japanese | — | 1309 |
| LMArena Korean | — | 1382 |
| LMArena Russian | — | 1360 |
| LMArena Spanish | — | 1401 |
Instruction Following Not comparable
GPT-5.2 Pro: —, Solar Pro4: 72.7 (#132)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | — | 1377 |
Long Context Not comparable
GPT-5.2 Pro: —, Solar Pro4: 42.1 (#130)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | — | 1381 |
Writing & Preference Not comparable
GPT-5.2 Pro: —, Solar Pro4: 56.5 (#138)
| Benchmark | GPT-5.2 Pro | Solar Pro4 |
|---|---|---|
| LMArena Text | — | 1386 |
| LMArena Creative Writing | — | 1316 |
| LMArena Multi-Turn | — | 1385 |
Frequently asked questions
Is GPT-5.2 Pro better than Solar Pro4?
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 42.1 on the Noometry Index. Solar Pro4 costs 110× 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 Solar Pro4?
Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; GPT-5.2 Pro lists at $21 and $168.
Which has the bigger context window?
Solar Pro4 does, with 524K tokens against 400K.
How many benchmarks do GPT-5.2 Pro and Solar Pro4 share?
0 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and Solar Pro4 has 18.