GPT 5.3 Codex Spark

Name: GPT 5.3 Codex Spark
Author: OpenCode Zen

Input price

$1.75/1M tokens

Output price

$14/1M tokens

Capabilities

Show unsupported (7)

Infrastructure

Streaming

Details

Model IDgpt-5.3-codex-spark

ProviderOpenCode Zen

CreatorOpenAI

Familygpt-5.3

License—

Statusactive

Typechat

Input modalitiestext

Output modalitiestext

Open weight—

Parameters—

Architecture—

Context window—

Max input—

Max output—

Reasoning tokens—

Knowledge cutoff—

Release date—

Sourceofficial

Pricing

Input

$1.75

Output

$14

Cache write

—

Cache read

$0.18

Batch in

—

Batch out

—

Family Comparison: gpt-5.3

Model	Caps	Perf	Speed	Context	Max out	Pricing
GPT 5.3 Codex Spark	S	—	—	—	—	$1.75$14
GPT 5.3 Codex	RTJJMS	—	—	400K	128K	$1.75$14

API

GET/v1/models/opencode/gpt-5.3-codex-spark

GPT 5.3 Codex Spark

gpt-5.3-codex-spark

Changes · 3 entries

gpt-5.3-codex-sparkupdateb301ebeMar 23, 2026, 11:47 PM

modalitiesinput["text"]output["text"]

gpt-5.3-codex-sparkupdate2b100acMar 23, 2026, 05:30 AM

pricingoutput$14cached input$0.175

model_typechat

gpt-5.3-codex-sparkcreate7f5c66fMar 21, 2026, 05:16 AM