Model comparison
GPT-5.2 Pro vs Step 2 16k Exp 202412
GPT-5.2 Pro is the stronger model overall, scoring 52.2 to 38.6 on the Noometry Index.
Last verified . 0 shared benchmarks.
StepFunSummary
- The widest gap is in math, where GPT-5.2 Pro leads 64.8 to 33.6.
Side by side
| GPT-5.2 Pro | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 52.2 | 38.6 |
| Released | 2025-12-11 | — |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $21 | — |
| Output $ / M tokens | $168 | — |
| Results tracked | 8 | 12 |
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Category by category
Coding Not comparable
GPT-5.2 Pro: —, Step 2 16k Exp 202412: 37.9 (#170)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | — | 1316 |
Reasoning GPT-5.2 Pro leads
GPT-5.2 Pro: 51.8 (#31), Step 2 16k Exp 202412: 24.8 (#140)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| LMArena Hard Prompts | — | 1299 |
| Epoch Capabilities Index | 155.41 | — |
Math GPT-5.2 Pro leads
GPT-5.2 Pro: 64.8 (#23), Step 2 16k Exp 202412: 33.6 (#171)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| LMArena Math | — | 1305 |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Knowledge Not comparable
GPT-5.2 Pro: —, Step 2 16k Exp 202412: 34.6 (#187)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | — | 1279 |
Multilingual Not comparable
GPT-5.2 Pro: —, Step 2 16k Exp 202412: 43.9 (#176)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | — | 1290 |
| LMArena Chinese | — | 1331 |
| LMArena Russian | — | 1324 |
Instruction Following Not comparable
GPT-5.2 Pro: —, Step 2 16k Exp 202412: 68.1 (#187)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | — | 1287 |
Long Context Not comparable
GPT-5.2 Pro: —, Step 2 16k Exp 202412: 39.7 (#165)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | — | 1307 |
Writing & Preference Not comparable
GPT-5.2 Pro: —, Step 2 16k Exp 202412: 52.5 (#168)
| Benchmark | GPT-5.2 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | — | 1321 |
| LMArena Creative Writing | — | 1328 |
| LMArena Multi-Turn | — | 1292 |
Frequently asked questions
Is GPT-5.2 Pro better than Step 2 16k Exp 202412?
GPT-5.2 Pro is the stronger model overall, scoring 52.2 to 38.6 on the Noometry Index.
How many benchmarks do GPT-5.2 Pro and Step 2 16k Exp 202412 share?
0 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and Step 2 16k Exp 202412 has 12.