GPT-5

Name: OpenAI GPT-5
Price: 1.25 USD
Availability: InStock
Author: OpenAI

openai/gpt-5

GPT-5 is OpenAI's reasoning model released in August 2025 for coding, reasoning and agentic tasks across domains, accepting text and image input and producing text. OpenAI describes it as a coding collaborator for fixing bugs, editing code and answering questions about complex codebases, with configurable reasoning effort that includes a minimal setting for quicker replies. OpenAI now labels it a previous model, and later GPT-5.x releases are its recommended successors for fresh work.

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Input price: $1.25USD / 1M tokens
Output price: $10.00USD / 1M tokens
Context window: 400K
Max output: 128K

Production route

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Prompt

Image URL or upload

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400K context128K max outputVision

Input$1.25/MOutput$10.00/MCache read$0.13/M

OutputReady

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Model card

Specifications

Pricing

Input: $1.25 / 1M tokens
Output: $10 / 1M tokens
Cache read: $0.13 / 1M tokens

Context & modalities

Context window: 400,000 tokens
Max output: 128,000 tokens
Input: Text, image
Output: Text

Capabilities

Chat: Supported
Vision: Supported
Reasoning: Supported
Structured output: Supported
Function calling: Supported
Audio input: Not supported

Access

Provider: OpenAI
Model ID: openai/gpt-5
Execution: sync
Base URL: https://api.sandbase.ai
API: Responses API
Endpoint: /v1/responses
API: Chat Completions API
Endpoint: /v1/chat/completions

Start building

Send your first request

Choose either supported API with unified authentication and usage tracking.

Production API

Responses API endpoint

https://api.sandbase.ai/v1/responses

Model ID

openai/gpt-5

# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/responses" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "openai/gpt-5",
  "input": "Hello",
  "max_output_tokens": 2048
}
SANDBASE_JSON
)
printf '%s\n' "$result"

Choose your model

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Questions

FAQ

How do I call OpenAI GPT-5 through SandBase?

Create a SandBase API key, then send requests with the model ID "openai/gpt-5" to Responses API (/v1/responses) or Chat Completions API (/v1/chat/completions) at https://api.sandbase.ai. The request examples on this page show the exact payload.

How much does OpenAI GPT-5 cost?

$1.25 per 1M input tokens and $10 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.

What is the context window of OpenAI GPT-5?

400K tokens of context, with up to 128K output tokens per response.

Which features does OpenAI GPT-5 support?

OpenAI GPT-5 supports vision (image input), reasoning, function calling, structured output. See Specifications above for the full list.

Do I need a separate OpenAI account?

No. One SandBase API key and balance gives you access to OpenAI GPT-5 and the other models in the catalog; you do not need to sign up with OpenAI separately.