Model comparison
GPT-5.4 Pro vs Solar Pro 3
GPT-5.4 Pro has enough public results to be ranked (#18); Solar Pro 3 does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
UpstageSummary
- They share 1 benchmark with published results for both. GPT-5.4 Pro scores higher in 2 categories and Solar Pro 3 in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.4 Pro leads 70.7 to 22.4.
- The biggest single-benchmark swing is CritPt: 30% for GPT-5.4 Pro and 0% for Solar Pro 3.
- Solar Pro 3 is cheaper at $0.25 / $0.25 per million input/output tokens, against $30 / $180 for GPT-5.4 Pro.
- GPT-5.4 Pro accepts more context: 1.05M tokens versus 131K.
Side by side
| GPT-5.4 Pro | Solar Pro 3 | |
|---|---|---|
| Provider | OpenAI | Upstage |
| Noometry Index | 58.9 | 33.9 |
| Released | 2026-03-05 | 2026-01 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 131K |
| Max output | 128K | 8K |
| Input $ / M tokens | $30 | $0.25 |
| Output $ / M tokens | $180 | $0.25 |
| Results tracked | 16 | 2 |
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Category by category
Coding GPT-5.4 Pro leads
GPT-5.4 Pro: 43.2 (#90), Solar Pro 3: 34.8
Reasoning GPT-5.4 Pro leads
GPT-5.4 Pro: 70.7 (#13), Solar Pro 3: 22.4
| Benchmark | GPT-5.4 Pro | Solar Pro 3 |
|---|---|---|
| CritPt | 30% | 0% |
| ARC-AGI-2 | 83.3% | — |
| SimpleBench | 74.1% | — |
| ARC-AGI-1 | 94.5% | — |
| Chess Puzzles | 58.6% | — |
| EnigmaEval | 23.8% | — |
| Epoch Capabilities Index | 158.93 | — |
Math Not comparable
GPT-5.4 Pro: 72.4 (#22), Solar Pro 3: —
| Benchmark | GPT-5.4 Pro | Solar Pro 3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 82.5% | — |
| FrontierMath Tier 4 | 58.5% | — |
| FrontierMath (Feb 2025 set) | 50% | — |
| FrontierMath Tier 4 (v1) | 37.5% | — |
Knowledge Not comparable
GPT-5.4 Pro: 68.3 (#7), Solar Pro 3: —
| Benchmark | GPT-5.4 Pro | Solar Pro 3 |
|---|---|---|
| GPQA Diamond | 94.6% | — |
| Humanity's Last Exam | 44.3% | — |
| SimpleQA Verified | 46.3% | — |
| Vectara Hallucination Rate | 8.3% | — |
Frequently asked questions
Is GPT-5.4 Pro better than Solar Pro 3?
GPT-5.4 Pro has enough public results to be ranked (#18); Solar Pro 3 does not yet, so treat this comparison as directional.
Which is cheaper, GPT-5.4 Pro or Solar Pro 3?
Solar Pro 3 is cheaper. It lists at $0.25 per million input tokens and $0.25 per million output tokens; GPT-5.4 Pro lists at $30 and $180.
Is GPT-5.4 Pro or Solar Pro 3 better for coding?
GPT-5.4 Pro scores higher on coding benchmarks: 43.2 versus 34.8 in the Noometry coding category.
Which has the bigger context window?
GPT-5.4 Pro does, with 1.05M tokens against 131K.
How many benchmarks do GPT-5.4 Pro and Solar Pro 3 share?
1 benchmark has published results for both models. GPT-5.4 Pro has 16 scored results on Noometry and Solar Pro 3 has 2.