Model comparison
Aion 3.5 vs GPT-6 Sol
GPT-6 Sol has enough public results to be ranked (#46); Aion 3.5 does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Aion 3.5 scores higher in 1 category and GPT-6 Sol in 0 categories; one gap is clear of the uncertainty.
- Aion 3.5 is cheaper at $3 / $6 per million input/output tokens, against $2 / $10 for GPT-6 Sol.
- GPT-6 Sol accepts more context: 1.05M tokens versus 262K.
Side by side
| Aion 3.5 | GPT-6 Sol | |
|---|---|---|
| Provider | AionLabs | OpenAI |
| Noometry Index | 57.9 | 49.2 |
| Released | — | 2026-09-22 |
| Weights | Proprietary | Proprietary |
| Context window | 262K | 1.05M |
| Max output | 33K | 128K |
| Input $ / M tokens | $3 | $2 |
| Output $ / M tokens | $6 | $10 |
| Results tracked | 1 | 22 |
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Category by category
Coding Not comparable
Aion 3.5: —, GPT-6 Sol: 59.6 (#11)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| DeepSWE | — | 68.8% |
| FrontierCode | — | 49.3% |
| LMArena WebDev | — | 1692 |
| LMArena Coding | — | 1453 |
Agentic & Tool Use Not comparable
Aion 3.5: —, GPT-6 Sol: 33.5 (#49)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| GDP.pdf | — | 28% |
Reasoning Not comparable
Aion 3.5: —, GPT-6 Sol: 49.3 (#34)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| NYT Connections (extended) | — | 90.1% |
| EBR-Bench | — | 53.3% |
| LMArena Hard Prompts | — | 1420 |
Math Not comparable
Aion 3.5: —, GPT-6 Sol: 35.8 (#135)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| LMArena Math | — | 1404 |
Knowledge Not comparable
Aion 3.5: —, GPT-6 Sol: 43.0 (#87)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| Vectara Hallucination Rate | — | 6.5% |
| LMArena Expert | — | 1449 |
Multimodal Not comparable
Aion 3.5: —, GPT-6 Sol: 47.6 (#9)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| Furniture Assembly | — | 58.3% |
Multilingual Not comparable
Aion 3.5: —, GPT-6 Sol: 51.0 (#113)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| LMArena Non-English | — | 1389 |
| LMArena Chinese | — | 1416 |
| LMArena Russian | — | 1407 |
| LMArena Spanish | — | 1377 |
Instruction Following Not comparable
Aion 3.5: —, GPT-6 Sol: 74.4 (#97)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| LMArena Instruction Following | — | 1406 |
Long Context Not comparable
Aion 3.5: —, GPT-6 Sol: 43.2 (#100)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| LMArena Longer Query | — | 1415 |
Writing & Preference Aion 3.5 leads
Aion 3.5: 74.9, GPT-6 Sol: 72.3 (#15)
| Benchmark | Aion 3.5 | GPT-6 Sol |
|---|---|---|
| EQ-Bench Creative Writing | 1929 | 2125 |
| LMArena Text | — | 1396 |
| LMArena Creative Writing | — | 1392 |
| LMArena Multi-Turn | — | 1405 |
Frequently asked questions
Is Aion 3.5 better than GPT-6 Sol?
GPT-6 Sol has enough public results to be ranked (#46); Aion 3.5 does not yet, so treat this comparison as directional.
Which is cheaper, Aion 3.5 or GPT-6 Sol?
Aion 3.5 is cheaper. It lists at $3 per million input tokens and $6 per million output tokens; GPT-6 Sol lists at $2 and $10.
Which has the bigger context window?
GPT-6 Sol does, with 1.05M tokens against 262K.
How many benchmarks do Aion 3.5 and GPT-6 Sol share?
1 benchmark has published results for both models. Aion 3.5 has 1 scored results on Noometry and GPT-6 Sol has 22.