# GPT-5.2-Codex vs Solar Pro 4

> Side-by-side benchmark comparison for GPT-5.2-Codex and Solar Pro 4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-codex-vs-solar-pro-4
- Last updated: September 10, 2026

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

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT-5.2-Codex and Solar Pro 4.

## Summary

- GPT-5.2-Codex and Solar Pro 4 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-5.2-Codex | Solar Pro 4 |
|----------|----------|----------|
| Creator | OpenAI | Upstage |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 400K | 512K |
| Independent public score (not head-to-head) | 54.19 | null |
| Benchmarks Covered | 3 | 10 |
| Pricing (input/output) | $1.75 / $14.00 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 50.6 (Estimated · #47/152)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | GPT-5.2-Codex | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 51.79% | Coming soon | Coming soon |
| JobBench | 26.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 57.0% | Coming soon |
| BrowseComp | Coming soon | 49.2% | Coming soon |
| MCP Atlas | Coming soon | 61.4% | Coming soon |
| APEX-Agents | Coming soon | 18.7% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 51.5 (Supported · #50/151)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | GPT-5.2-Codex | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 37.91% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 57.0% | Coming soon |
| SWE-bench Verified | Coming soon | 70.6% | Coming soon |
| LiveCodeBench | Coming soon | 87.8% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 72.4 (Unranked · 1 rankable row)
- Solar Pro 4 public-lane score: Coming soon

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 77.6 (Unranked · 2 rankable rows)
- Solar Pro 4 public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 56.2 (Estimated · #50/183)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | GPT-5.2-Codex | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 89.0% | Coming soon |
| MMLU-Pro | Coming soon | 86.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: 93.7 (#3/123)
- Solar Pro 4 public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.2-Codex public-lane score: Coming soon
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | GPT-5.2-Codex | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 95.3% | Coming soon |

## FAQ

### Can I compare GPT-5.2-Codex and Solar Pro 4 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-5.2-Codex vs Solar Pro 2](/compare/gpt-5-2-codex-vs-solar-pro-2)
- [Solar Pro 4 vs Solar Pro 2](/compare/solar-pro-2-vs-solar-pro-4)
- [GPT-5.2-Codex vs Solar Pro 3](/compare/gpt-5-2-codex-vs-solar-pro-3)
- [Solar Pro 4 vs Solar Pro 3](/compare/solar-pro-3-vs-solar-pro-4)

## Explore More

- [GPT-5.2-Codex profile](/models/gpt-5-2-codex)
- [Solar Pro 4 profile](/models/solar-pro-4)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)