Model profile
GPT-5.3-Codex-Spark
Evidence coverage
0 of 323 tracked benchmarks are published. 0 are verified and 0 provisional. 0 of 8 categories are measured.
- Published / tracked
- 0 / 323
- Verified
- 0
- Provisional
- 0
- Categories with evidence
- 0 / 8
Evidence by category
- Agentic0 benchmarksNot measured
- Coding0 benchmarksNot measured
- Reasoning0 benchmarksNot measured
- Knowledge0 benchmarksNot measured
- Math0 benchmarksNot measured
- Multilingual0 benchmarksNot measured
- Multimodal0 benchmarksNot measured
- Inst. Following0 benchmarksNot measured
BenchLM is tracking GPT-5.3-Codex-Spark, but sourced benchmark results are not published on the site yet. This page currently shows the model metadata we can verify now, and score-level benchmark coverage will appear once public evaluations land.
GPT-5.3-Codex-Spark is a proprietary model with a 256K token context window. It uses explicit chain-of-thought reasoning, which typically improves performance on math and complex reasoning tasks at the cost of higher latency and token usage.
GPT-5.3-Codex-Spark sits inside the GPT-5.3 Codex family alongside GPT-5.3 Codex. This profile does not yet have sourced benchmarks on BenchLM, so the benchmark sections below are intentionally marked as coming soon.
Peer position
Exact provisional scores and ranks for the closest listed peers. A score can appear before a model clears the evidence threshold for a rank, so equal scores can have different rank states.
Range 56.58–57.01
- Qwen3.5 397BAlibabaCompare#7157.01Qwen3.5 397B is #71 with a score of 57.01.
- Qwen3.5-35B-A3BAlibabaCompare#7256.97Qwen3.5-35B-A3B is #72 with a score of 56.97.
- GPT-5.3-Codex-SparkCurrent modelOpenAI#7356.91GPT-5.3-Codex-Spark is #73 with a score of 56.91.
- Kimi K2.6Moonshot AICompare#7456.79Kimi K2.6 is #74 with a score of 56.79.
- GPT-5.4 miniOpenAICompare#7556.77GPT-5.4 mini is #75 with a score of 56.77.
- Grok 4 Fast (Reasoning)xAICompare#7656.59Grok 4 Fast (Reasoning) is #76 with a score of 56.59.
- Claude Haiku 4.5AnthropicCompare#7756.58Claude Haiku 4.5 is #77 with a score of 56.58.
Benchmark data coming soon
BenchLM has created this model profile, but no sourced benchmark rows are published here yet. Category charts, rankings, and score tables will appear after public evaluations are available and attached to source records.
Category evidence
Scores and ranks appear only where this model has published benchmark evidence. Categories without displayable source records remain not measured.
| Category | Score | Rank | Percentile | Weight | Benchmarks | Evidence |
|---|---|---|---|---|---|---|
| AgenticWeight 22%0 benchmarksNot measured | Not measured | Not ranked | Not available | 22% | 0 benchmarks | Not measured |
| CodingWeight 20%0 benchmarksNot measured | Not measured | Not ranked | Not available | 20% | 0 benchmarks | Not measured |
| ReasoningWeight 17%0 benchmarksNot measured | Not measured | Not ranked | Not available | 17% | 0 benchmarks | Not measured |
| KnowledgeWeight 12%0 benchmarksNot measured | Not measured | Not ranked | Not available | 12% | 0 benchmarks | Not measured |
| MathWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | Not ranked | Not available | 7% | 0 benchmarks | Not measured |
| MultimodalWeight 12%0 benchmarksNot measured | Not measured | Not ranked | Not available | 12% | 0 benchmarks | Not measured |
| Inst. FollowingWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
Chatbot Arena performance
Scroll horizontally to inspect confidence intervals and vote counts.
| View | Elo | Confidence interval | Votes |
|---|---|---|---|
| Text Overall | 1398 | Not available | Not available |
Frequently Asked Questions
How does GPT-5.3-Codex-Spark perform overall in AI benchmarks?
We are tracking GPT-5.3-Codex-Spark, but sourced benchmark coverage is still coming soon. The profile lists only the model metadata that has a verified public source.
Which sibling models are related to GPT-5.3-Codex-Spark?
GPT-5.3-Codex-Spark belongs to the GPT-5.3 Codex family. Related variants on BenchLM include GPT-5.3 Codex.
Does GPT-5.3-Codex-Spark have full benchmark coverage on BenchLM?
Not yet. GPT-5.3-Codex-Spark currently has 0 published benchmark scores out of the 323 benchmarks BenchLM tracks. BenchLM only exposes non-generated public benchmark rows, so missing categories stay blank until a sourced evaluation is available.
What is the context window size of GPT-5.3-Codex-Spark?
GPT-5.3-Codex-Spark has a published context window of 256K, which determines how much text it can process in a single interaction.
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