OpenAI: GPT-5.6 Terra Pro
Listed on OpenRouter as openai/gpt-5.6-terra-pro since Jul 10, 2026. 80 snapshot observations, 3 repricings.
$4.50per 1M blended · $2.00 in / $12 out
USD per 1M tokens · blended at 3 input : 1 output · at this price for 52 days (since Aug 18, 2026)
All-time low$2.25Jul 31, 2026
All-time high$5.63Jul 10, 2026
Change since first seen-20.0%$5.63 on Jul 10, 2026
Listed price over time
| Observed | Input | Output | Blended | Change |
|---|---|---|---|---|
| Aug 18, 2026 | $2.00 | $12 | $4.50 | +100.0% |
| Jul 31, 2026 | $1.00 | $6.00 | $2.25 | -20.0% |
| Jul 28, 2026 | $1.25 | $7.50 | $2.81 | -50.0% |
| Jul 10, 2026 | $2.50 | $15 | $5.63 | first observation |
Where it is listed today
Current listed rates across the sources LLMPI compares. The cheapest blended row is highlighted; lower price never implies identical terms, speed, or quality.
| Source | Input | Output | Blended | Listing ID |
|---|---|---|---|---|
| OpenRouter Pricing evidence | $2.00 | $12 | $4.50 | openai/gpt-5.6-terra-pro |
| Nous Portal Provider catalog (not exact listing evidence) | $2.00 | $12 | $4.50 | openai/gpt-5.6-terra-pro |
Evidence and scope
- Source
- OpenRouter public model listing
- Archive
- Wayback Machine snapshots of that listing (weekly-grade, from July 2023) plus LLMPI's own daily snapshots since June 2026
- Last observed
- Oct 9, 2026
- Data
- history.json (CC BY 4.0)
This is the listed standard text-token rate for one OpenRouter listing ID. It does not normalize caching, batch discounts, long-context tiers, providers behind the listing, or model quality. A price can also move because OpenRouter's default route changed provider.