GPT-5.6 Terra
workstationEfficient proprietary dense model from OpenAI, the mid-tier sibling of GPT-5.6 Sol. Same 1,050,000-token context and 128K max output as Sol. Text + image in, text out. Reasoning effort spans none through max; medium is default.
- Pricing: $2/1M input, $12/1M output.
Agents on Rails benchmark (Aug 2026, Le Mans round). 77.8% accuracy on 63 runs - 49 of 63, at $0.197 mean cost and a 3m 02s median, the fastest in the entire 16-model field. OpenAI’s three models (Sol 84.1%, Terra 77.8%, Luna 73%) score in exactly price order, all in the fastest third. Terra is the “20 cents a run” sweet spot: near-frontier accuracy at a fraction of the flagship’s cost.
AI-generated content marks
The provider reports that this model does not add embedded watermarks or provenance metadata to generated output.
- 1050k
- proprietary
- 🇺🇸 USA
- Aug 2026
Scores
Score per dollar
45 pts per $/M input
general_score (90) divided by cheapest input price ($2.00/M). Higher is better value. See live pricing.
Related models
Guides covering GPT-5.6 Terra
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Live per-provider pricing, throughput and uptime - refreshed about 1 month ago via OpenRouter. Click a column to sort.
some pricing may be stale - last verified 2026-08-15
| Provider | Type | Input $/M | Output $/M | Cache $/M | Tok/s | Latency | Uptime | Value |
|---|---|---|---|---|---|---|---|---|
|
OpenAI
stale
|
API | 2.00 | 12.00 | - | - | - | - | cheapest |
|
DigitalOcean
stale
|
API | 2.00 | 12.00 | 0.200 | - | - | - |
Default order: throughput among 95%+ uptime providers, then latency; subscriptions last. Sort by any column. Subscription rows show $/mo in the Value column - per-token columns are "-". Affiliate links are marked sponsored / nofollow. Confirm current pricing on the provider's site before committing.
Detailed API pricing page + JSON endpoint →
Inference cost over time
Data accumulates from the first daily sync - longer ranges populate over time. Prices come from OpenRouter snapshots, not a historical API.