Agent-ready

gpt-5.3-codex-spark

Model IDopenai/gpt-5.3-codex-spark

chatstreamingtool_callingvision

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Call summary

Input

$0.43 / 1M tokens

Output

$3.45 / 1M tokens

Context Window

400K

Available Configurations

Capabilities

Routing mode

auto

Available Configurations

Compare context, capabilities, and effective pricing by routing mode.

Routing mode

auto

Capabilities

chatstreamingtool_callingvision

Context Window

400K

Input

$1.44$0.43/ 1M tokensCache write: $0.54

Output

$11.51$3.45/ 1M tokensCache read: $0.04

Routing mode	Capabilities	Context Window	Input	Output
auto	chatstreamingtool_callingvision	400K	$1.44$0.43/ 1M tokensCache write: $0.54	$11.51$3.45/ 1M tokensCache read: $0.04

Integration

OpenAI compatible

Endpoint

/v1/chat/completions

Model ID

openai/gpt-5.3-codex-spark

Routing mode

auto

bash

curl -X POST \
  https://api.router.one/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "openai/gpt-5.3-codex-spark",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

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