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OpenAI·Pay as you go

gpt-5.3-codex

CodingText|CompareShare
ReasoningLongReasoningCompletionAgentic

Specifications

ProviderOpenAI
Model IDgpt-5.3-codex
Context Window1,000,000 tokens
Endpoint/v1/chat/completions
Billing TypePay as you go
Capabilities
CodingText
ReasoningLongReasoningCompletionAgentic

Pricing

Input

$1.23

per 1M tokens

Output

$9.80

per 1M tokens

Cost Estimate

1K in + 1K out$0.0110
10K in + 2K out$0.0319
100K in + 10K out$0.2205

This model uses token-based pricing. Input and output tokens are billed separately per million tokens.

API Example

curl https://api.aisa.one/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $AISA_API_KEY" \
  -d '{
    "model": "gpt-5.3-codex",
    "messages": [
      {
        "role": "user",
        "content": "Hello, what can you help me with?"
      }
    ],
    "max_tokens": 1024
  }'
Base URL: https://api.aisa.one
Endpoint: /v1/chat/completions

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Start using gpt-5.3-codex through AIsa's unified API today.

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