# GPT-5.3 Codex Spark API prices

GPT-5.3 Codex Spark (gpt-codex-spark) — 128k context, 128k max output.
2 metered per-token offers from 3 provider(s), in USD per 1M tokens.
Prices as of 2026-10-04.

| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context |
| --- | --- | --- | --- | --- |
| OpenAI | $1.75 | $14 | $0.175 | 128k |
| OpenCode Zen | $1.75 | $14 | $0.175 | 128k |

## Summary

- Cheapest input: $1.75 per 1M tokens (OpenAI)
- Cheapest output: $14 per 1M tokens (OpenAI)
- First-party: $14 per 1M output tokens (OpenAI)
- Free offers: Poe
- Subscription plans (not per-token): none
- Released: 2026-02-05
- Inputs: image, pdf, text

## FAQ

### What is the cheapest GPT-5.3 Codex Spark API?

As of Oct 4, 2026, OpenAI has the lowest GPT-5.3 Codex Spark output price at $14 per 1M tokens, and OpenAI has the lowest input price at $1.75 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

### How much does GPT-5.3 Codex Spark cost on OpenAI?

OpenAI charges $1.75 per 1M input tokens and $14 per 1M output tokens for GPT-5.3 Codex Spark.

### How many providers offer GPT-5.3 Codex Spark?

3 providers list GPT-5.3 Codex Spark on Sovyron; 2 of them sell it at a metered per-token price.

### Is GPT-5.3 Codex Spark free?

1 provider(s) list a free-tier offer: Poe. Free tiers usually have rate limits.

### What is the context window of GPT-5.3 Codex Spark?

GPT-5.3 Codex Spark supports a 128k-token context window and up to 128k output tokens.

HTML page: https://sovyron.com/models/gpt-5-3-codex-spark/
Full dataset: https://sovyron.com/data/catalog.json