OpenAI, proprietary
GPT-5.3 Codex Spark
GPT-5.3 Codex Spark is a OpenAI model tracked on Noometry for pricing and specifications. API pricing starts at $1.75 per million input tokens and $14 per million output tokens, with a 128K-token context window.
Last verified
Specifications
- Noometry rank
- Unranked
- Index score
- Not ranked
- Evidence
- 0 results
- Provider
- OpenAI
- Released
- February 5, 2026
- Weights
- Proprietary
- Reasoning
- Yes
- Context window
- 128K
- Max output
- 32K
- Input price
- $1.75 / M
- Output price
- $14 / M
- Blended price
- $4.81 / M
- Output speed
- Not measured
- Value
- Not ranked
- Knowledge cutoff
- August 2025
- Input
- text, image, pdf
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Benchmark results
Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.
No public benchmark results are tracked for GPT-5.3 Codex Spark yet.
API pricing by provider
| Route | Input $/M | Output $/M | Cached input $/M | Checked |
|---|---|---|---|---|
| openai | $1.75 | $14 | $0.17 | 2026-10-10 |
Compare GPT-5.3 Codex Spark
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Frequently asked questions
How good is GPT-5.3 Codex Spark?
GPT-5.3 Codex Spark is a OpenAI model tracked on Noometry for pricing and specifications. API pricing starts at $1.75 per million input tokens and $14 per million output tokens, with a 128K-token context window.
How much does GPT-5.3 Codex Spark cost?
GPT-5.3 Codex Spark costs $1.75 per million input tokens and $14 per million output tokens on OpenAI's own API, with cached input at $0.17.
What is GPT-5.3 Codex Spark's context window?
GPT-5.3 Codex Spark accepts up to 128K tokens of input and can write up to 32K tokens in one response.
Is GPT-5.3 Codex Spark open source?
No. GPT-5.3 Codex Spark is proprietary and available only through OpenAI's API and partner platforms.