GPT-5.3 Codex Spark

OpenAI · model · context window 128,000 tokens.

Pricing (per 1M tokens)

Input$1.75

Output$14.00

Cache read$0.1750

Specifications

Context window128,000 tokens

Max output32,000 tokens

Modalitiestext

VisionNo

Tool useYes

ReasoningNo

Prompt cachingNo

Estimate cost with GPT-5.3 Codex Spark

GPT-5.3 Codex Spark is pre-selected below. Enter your token counts and volume to see the cost per request, per day and per month — then switch models to compare.

Model

Input tokens(tokens)

Output tokens(tokens)

Results update automatically as you type.

Result

$0.00875 per request

~$262.50/month at 1,000 requests/day

Input cost: $0.00175
Output cost: $0.00700
Per request: $0.00875
Per day: $8.75
Per month: $262.50

Chatbot Cost Calculator Compare all models

Source: auto-discovery (models.dev). Prices are re-checked daily against the provider’s official pricing; this rate was last changed on 19 July 2026. A recent date here just means the price is still current, not that it moved.