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GPT 5.6 Terra (Fast)
openai·openai/gpt-5.6-terra-fast·GA·Closed·gpt-terra series·NEW
Balanced GPT-5.6 model for capable, cost-efficient everyday work
At a glance
Reference price$4.00 / $24.00 per 1M
Cache read $0.40 · Vercel AI Gateway
Lowest paid$4.00 / $24.00
Vercel AI Gateway Cloud
Context1,050,000
Output limit128,000
Capabilities
✓ Reasoning✓ Tool use✓ Structured outputTemperature✓ Attachments
Modalities
TextImagePDF
Knowledge cutoff2026-02-16
Released / updated2026-07-09 / 2026-07-09
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 1 providers1 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Vercel AI Gateway | Cloud | $4.00 | $24.00 | $0.40 | $2.50 | 1,050,000 | 128,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1Vercel AI Gateway$1,568.00
The cheapest paid channel is the only channel.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
effort = noneeffort = loweffort = mediumeffort = higheffort = xhigheffort = max
Related models
GPT-5.6 Terrasame series$2.00 / $12.00GPT-5.6 Terra Prosame series$3.13 / $18.75GPT-5.6 Terra (Global)same series$2.20 / $13.20GLM-5.2cheaper alternative$1.40 / $4.40DeepSeek V4 Procheaper alternative$0.435 / $0.87DeepSeek V4 Flashcheaper alternative$0.14 / $0.28DeepSeek V4 Flash 0731cheaper alternative$0.479 / $1.44
Price historyone sample accumulated per data sync
Input list $4.00Output list $24.00Min blended $9.00
Price history accumulates from each data sync; currently only 1 sample(s) (2026-08-19). Each future sync adds a point, and once accumulated a line is drawn here.