GPT-6 Astra vs GPT-Image-2.5 Sunburst

GPT-6 Astra (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 3 Credits / M for GPT-6 Astra and 17.5 Credits / M for GPT-Image-2.5 Sunburst, so GPT-6 Astra is 83% cheaper.

GPT-6 Astragpt-6-astra
OpenAI
Input (prompt)
3Credits / M
≈ $0.454
Output (completion)
15Credits / M
≈ $2.27
1.05M context · 128K output95% off
GPT-6 Astra details
GPT-Image-2.5 Sunburstgpt-image-2.5-sunburst
OpenAI
Input (prompt)
17.5Credits / M
≈ $2.65
Output (completion)
105Credits / M
≈ $15.91
— context · — output47% off
GPT-Image-2.5 Sunburst details
Lower input price
GPT-6 Astra
83% cheaper
More exclusive capabilities
GPT-6 Astra
Function Calling, Reasoning, Response Schema

Specs side by side

Item
GPT-6 Astragpt-6-astra
GPT-Image-2.5 Sunburstgpt-image-2.5-sunburst
Input (prompt) · Credits / M3≈ $0.45417.5≈ $2.65
Output (completion) · Credits / M15≈ $2.27105≈ $15.91
Cache read · Credits / M0.34.38
Context window1.05M—
Max output128K—
7-day uptime98.9%—
Latest probe latency2.08 s—
Measured throughput22.7 t/s—
ProtocolsOpenAI Responses—
Sample monthly cost (10M in + 2M out)60≈ $9.09385≈ $58.32

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

CapabilityGPT-6 AstraGPT-Image-2.5 Sunburst
Vision
Prompt Caching
Function Calling
Reasoning
Response Schema
Streaming
Web Search
Audio
Video
File Input
Realtime
Session
Media
Multipart Form
Binary Response

FAQ

Which is cheaper, GPT-6 Astra or GPT-Image-2.5 Sunburst?

At the WandAPI default channel price, GPT-6 Astra input costs 3 Credits / M and GPT-Image-2.5 Sunburst input costs 17.5 Credits / M, so GPT-6 Astra is 83% cheaper. Output and cache prices are in the specs table above.

Can I switch between GPT-6 Astra 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-6 Astra and GPT-Image-2.5 Sunburst differ?

Only GPT-6 Astra: Function Calling, Reasoning, Response Schema, Streaming, Web Search. Every other capability is either supported by both or by neither; see the capability table above.

More comparisons

GPT-6 Astra vs GPT-5.6 SolGPT-6 Astra vs GPT-5.6 TerraGPT-6 Astra vs GPT-6 SolGPT-6 Astra vs GPT-6.1 SolGPT-6 Astra vs GPT-6.1 TerraGPT-6 Astra vs GPT-Image-2GPT-6 Astra vs gpt-image-2-cGPT-6 Astra vs GPT-Image-2.5 FlareGPT-Image-2.5 Sunburst vs GPT-5.6 SolGPT-Image-2.5 Sunburst vs GPT-5.6 TerraGPT-Image-2.5 Sunburst vs GPT-6 SolGPT-Image-2.5 Sunburst vs GPT-6.1 Sol

One API key for both GPT-6 Astra and GPT-Image-2.5 Sunburst

Free credits on sign-up, pay as you go, no monthly fee.

Get an API Key