gpt-5.4 vs gpt-5.6-sol
| gpt-5.4 | gpt-5.6-sol | |
|---|---|---|
| Providers | OpenAI | OpenAI |
| Input $/M | $2.50 | $4.00 |
| Output $/M | $15.00 | $20.00 |
| Output multiplier | ×6.00 | ×5.00 |
| Context window | 1.05M tokens | 1.05M tokens |
| Intelligence index | 39.0 | 47.0 |
| Coding index | 71.1 | 77.4 |
What the numbers mean
Input pricing is close — 1.60× apart — so the decision should come down to measured quality on your own evaluation set rather than headline cost.
On measured intelligence index the gap is 8.0 points, with gpt-5.6-sol ahead. That is a large enough spread to be visible on multi-step tasks.
Tags: gpt-5.4 — Chat, Reasoning, Coding, Vision · gpt-5.6-sol — Chat, Reasoning, Coding, Vision
Code
from openai import OpenAI
client = OpenAI(base_url="https://starseaapi.com/v1", api_key="sk-...")
# gpt-5.4
client.chat.completions.create(model="gpt-5.4", messages=[{"role":"user","content":"Hi"}])
# gpt-5.6-sol
client.chat.completions.create(model="gpt-5.6-sol", messages=[{"role": "user", "content": "Hi"}])