gpt-5 — API, Pricing & Context Window | Vivgrid
gpt-5 on Vivgrid: OpenAI's GPT-5 model with a 272K context window, function calling, and three-region geo-distributed acceleration.
gpt-5 is OpenAI's foundational GPT-5 model, a reliable all-rounder for reasoning, coding assistance, and agent workloads. Its 272K-token context window covers most long-context needs, and it supports robust function calling.
On Vivgrid, gpt-5 enjoys one of the widest acceleration footprints — geo-distributed across AMER, EMEA, and APAC — for consistently low latency worldwide.
Specifications
| Provider | OpenAI |
| Model ID | gpt-5 |
| Best for | General-purpose |
| Available on | Chat Completions |
| Context window | 272,000 tokens |
| Max output | 128,000 tokens |
| Modalities | Text, Image |
| Tool / function calling | Yes |
| Knowledge cutoff | 2024-09 |
| Acceleration | ⚡ Geo-Distributed — AMER, EMEA, APAC |
Pricing
Pricing in USD per 1M tokens.
| Input | Cached input | Output |
|---|---|---|
| $1.25 | $0.125 | $10.00 |
What one request costs
The rates above applied to a 20K-token prompt with a 2K-token reply — a typical single agent turn, small enough that every request is billed at the base rate.
| Request | Cost |
|---|---|
| Cold prompt, nothing cached | $0.0450 |
| Warm prompt, 90% of the input served from cache | $0.0248 |
API surfaces
The Vivgrid Console catalogs gpt-5 on one surface, all behind the same API key. The endpoint shown is the one the Console previews for that surface.
| Surface | Primary endpoint | Use it for |
|---|---|---|
| Chat Completions | /chat/completions | Agent projects, where Vivgrid injects the model, system prompt and tools server-side, and Model API calls that name the model per request. |
Quick start
Get an API key from the Vivgrid Console, then call gpt-5 directly.
curl https://api.vivgrid.com/v1/chat/completions \
-H "Authorization: Bearer $VIVGRID_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-5",
"messages": [
{ "role": "user", "content": "Say hello in English, Chinese and Spanish." }
],
"stream": true
}'Ideal use cases
- General-purpose agents and chat assistants
- Tool-calling workflows that need dependable structured output
- Globally distributed deployments
- A stable baseline before adopting newer 5.x models
Related models
- gpt-6-astra — the gpt-6 generation flagship
- gpt-6.1-sol — the current balanced model with more capability
- gpt-5.6-luna — smaller, cheaper sibling