StarSeaAPI
gpt-5.3-codex-spark vs gpt-5.6-terra
| gpt-5.3-codex-spark | gpt-5.6-terra | |
|---|---|---|
| Providers | OpenAI | OpenAI |
| Input $/M | $1.75 | $2.00 |
| Output $/M | $14.00 | $12.00 |
| Output multiplier | ×8.00 | ×6.00 |
| Context window | 128K tokens | 1.05M tokens |
| Intelligence index | — | 46.8 |
| Coding index | — | 76.7 |
What the numbers mean
Input pricing is close — 1.14× apart — so the decision should come down to measured quality on your own evaluation set rather than headline cost.
Tags: gpt-5.3-codex-spark — Chat, Reasoning, Coding, Vision · gpt-5.6-terra — Chat, Reasoning, Coding, Vision
Code
from openai import OpenAI
client = OpenAI(base_url="https://starseaapi.com/v1", api_key="sk-...")
# gpt-5.3-codex-spark
client.chat.completions.create(model="gpt-5.3-codex-spark", messages=[{"role":"user","content":"Hi"}])
# gpt-5.6-terra
client.chat.completions.create(model="gpt-5.6-terra", messages=[{"role": "user", "content": "Hi"}])