# GPT-5.3-Codex-Spark vs Grok 2 mini

> Side-by-side benchmark comparison for GPT-5.3-Codex-Spark and Grok 2 mini across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-3-codex-spark-vs-grok-2-mini
- Last updated: October 14, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT-5.3-Codex-Spark and Grok 2 mini.

## Summary

- GPT-5.3-Codex-Spark and Grok 2 mini do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | GPT-5.3-Codex-Spark | Grok 2 mini |
|----------|----------|----------|
| Creator | OpenAI | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 256K | Unknown |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 0 | 5 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | N/A |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- GPT-5.3-Codex-Spark public-lane score: Coming soon
- Grok 2 mini public-lane score: Coming soon

| Benchmark | GPT-5.3-Codex-Spark | Grok 2 mini | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | Coming soon | 85.7% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.3-Codex-Spark public-lane score: Coming soon
- Grok 2 mini public-lane score: Coming soon

| Benchmark | GPT-5.3-Codex-Spark | Grok 2 mini | Winner |
|-----------|-----------|-----------|--------|
| MMMU | Coming soon | 63.2% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.3-Codex-Spark public-lane score: Coming soon
- Grok 2 mini public-lane score: Coming soon

| Benchmark | GPT-5.3-Codex-Spark | Grok 2 mini | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 51% | Coming soon |
| MMLU | Coming soon | 86.2% | Coming soon |
| MMLU-Pro | Coming soon | 72% | Coming soon |

## FAQ

### Can I compare GPT-5.3-Codex-Spark and Grok 2 mini on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [GPT-5.3-Codex-Spark vs GPT-5.3 Codex](/compare/gpt-5-3-codex-vs-gpt-5-3-codex-spark)
- [Grok 2 mini vs GPT-5.3 Codex](/compare/gpt-5-3-codex-vs-grok-2-mini)
- [GPT-5.3-Codex-Spark vs Grok 2](/compare/gpt-5-3-codex-spark-vs-grok-2)
- [Grok 2 mini vs Grok 2](/compare/grok-2-vs-grok-2-mini)

## Explore More

- [GPT-5.3-Codex-Spark profile](/models/gpt-5-3-codex-spark)
- [Grok 2 mini profile](/models/grok-2-mini)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)