# GPT-5.2 Pro vs Mercury 2

> Side-by-side benchmark comparison for GPT-5.2 Pro and Mercury 2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-pro-vs-mercury-2
- Last updated: September 8, 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 Pro and Mercury 2.

## Summary

- GPT-5.2 Pro and Mercury 2 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 Pro | Mercury 2 |
|----------|----------|----------|
| Creator | OpenAI | Inception |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 400K | 128K |
| Independent public score (not head-to-head) | 68.83 | 42.34 |
| Benchmarks Covered | 0 | 0 |
| Pricing (input/output) | $21.00 / $168.00 | $0.25 / $0.75 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.2 Pro public-lane score: Coming soon
- Mercury 2 public-lane score: 38.1 (Estimated · #124/152)

### Coding

- Winner: Insufficient shared evidence
- GPT-5.2 Pro public-lane score: Coming soon
- Mercury 2 public-lane score: 24.6 (Supported · #149/151)

## FAQ

### Can I compare GPT-5.2 Pro and Mercury 2 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 Pro vs GPT-5.2](/compare/gpt-5-2-vs-gpt-5-2-pro)
- [Mercury 2 vs GPT-5.2](/compare/gpt-5-2-vs-mercury-2)
- [GPT-5.2 Pro vs GPT-5.2 Instant](/compare/gpt-5-2-instant-vs-gpt-5-2-pro)
- [Mercury 2 vs GPT-5.2 Instant](/compare/gpt-5-2-instant-vs-mercury-2)

## Explore More

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