Model comparison
GPT-5 Pro vs Step 2 16k Exp 202412
GPT-5 Pro is the stronger model overall, scoring 46.2 to 38.6 on the Noometry Index.
Last verified . 0 shared benchmarks.
StepFunSummary
- The widest gap is in knowledge, where GPT-5 Pro leads 56.2 to 34.6.
Side by side
| GPT-5 Pro | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 46.2 | 38.6 |
| Released | 2025-10-06 | — |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 272K | — |
| Input $ / M tokens | $15 | — |
| Output $ / M tokens | $120 | — |
| Results tracked | 12 | 12 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding GPT-5 Pro leads
GPT-5 Pro: 43.4 (#77), Step 2 16k Exp 202412: 37.9 (#170)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| WeirdML | 60.4% | — |
| LMArena Coding | — | 1316 |
| AlgoTune | 1.31 | — |
Reasoning GPT-5 Pro leads
GPT-5 Pro: 39.2 (#52), Step 2 16k Exp 202412: 24.8 (#140)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| ARC-AGI-1 | 70.2% | — |
| EnigmaEval | 18.8% | — |
| LMArena Hard Prompts | — | 1299 |
| Epoch Capabilities Index | 150.26 | — |
Math GPT-5 Pro leads
GPT-5 Pro: 48.0 (#53), Step 2 16k Exp 202412: 33.6 (#171)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| LMArena Math | — | 1305 |
| FrontierMath Tier 4 (v1) | 14.6% | — |
Knowledge GPT-5 Pro leads
GPT-5 Pro: 56.2 (#39), Step 2 16k Exp 202412: 34.6 (#187)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| Humanity's Last Exam | 31.6% | — |
| LMArena Expert | — | 1279 |
Multilingual Not comparable
GPT-5 Pro: —, Step 2 16k Exp 202412: 43.9 (#176)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | — | 1290 |
| LMArena Chinese | — | 1331 |
| LMArena Russian | — | 1324 |
Instruction Following Not comparable
GPT-5 Pro: —, Step 2 16k Exp 202412: 68.1 (#187)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | — | 1287 |
Long Context Not comparable
GPT-5 Pro: —, Step 2 16k Exp 202412: 39.7 (#165)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | — | 1307 |
Writing & Preference Not comparable
GPT-5 Pro: —, Step 2 16k Exp 202412: 52.5 (#168)
| Benchmark | GPT-5 Pro | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | — | 1321 |
| LMArena Creative Writing | — | 1328 |
| LMArena Multi-Turn | — | 1292 |
Frequently asked questions
Is GPT-5 Pro better than Step 2 16k Exp 202412?
GPT-5 Pro is the stronger model overall, scoring 46.2 to 38.6 on the Noometry Index.
Is GPT-5 Pro or Step 2 16k Exp 202412 better for coding?
GPT-5 Pro scores higher on coding benchmarks: 43.4 versus 37.9 in the Noometry coding category.
How many benchmarks do GPT-5 Pro and Step 2 16k Exp 202412 share?
0 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Step 2 16k Exp 202412 has 12.