GPT-5.6 Terra vs GPT-Image-2.5 Sunburst
GPT-5.6 Terra (OpenAI) versus GPT-Image-2.5 Sunburst (OpenAI): API pricing, context window, capabilities and uptime, from the same data as each model page, at the WandAPI default channel price. Input costs 1.2 Credits / M for GPT-5.6 Terra and 17.5 Credits / M for GPT-Image-2.5 Sunburst, so GPT-5.6 Terra is 93% cheaper.
GPT-5.6 Terragpt-5.6-terraGPT-Image-2.5 Sunburstgpt-image-2.5-sunburstSpecs side by side
| Item | GPT-5.6 Terragpt-5.6-terra | GPT-Image-2.5 Sunburstgpt-image-2.5-sunburst |
|---|---|---|
| Input (prompt) · Credits / M | 1.2≈ $0.182 | 17.5≈ $2.65 |
| Output (completion) · Credits / M | 7.2≈ $1.09 | 105≈ $15.92 |
| Cache read · Credits / M | 0.12 | 4.38 |
| Context window | 1.05M | — |
| Max output | 128K | — |
| 7-day uptime | — | — |
| Latest probe latency | — | — |
| Measured throughput | 52.8 t/s | — |
| Protocols | OpenAI Responses | — |
| Sample monthly cost (10M in + 2M out) | 26.4≈ $4.00 | 385≈ $58.38 |
Prices are the WandAPI default channel price in Credits (1 Credit = ¥1); green marks the better side. Uptime and latency come from WandAPI probes; a dash means the model is not probed yet.
Capabilities
FAQ
Which is cheaper, GPT-5.6 Terra or GPT-Image-2.5 Sunburst?
At the WandAPI default channel price, GPT-5.6 Terra input costs 1.2 Credits / M and GPT-Image-2.5 Sunburst input costs 17.5 Credits / M, so GPT-5.6 Terra is 93% cheaper. Output and cache prices are in the specs table above.
Can I switch between GPT-5.6 Terra and GPT-Image-2.5 Sunburst at any time?
Yes. WandAPI calls every model with the same API key; switching is just changing the model field in the request, and billing is split per model in one console.
How do the capabilities of GPT-5.6 Terra and GPT-Image-2.5 Sunburst differ?
Only GPT-5.6 Terra: Function Calling, Reasoning, Response Schema, Streaming. Every other capability is either supported by both or by neither; see the capability table above.
More comparisons
One API key for both GPT-5.6 Terra and GPT-Image-2.5 Sunburst
Free credits on sign-up, pay as you go, no monthly fee.