# GPT-5.1-Codex vs ScaleDown Compress

> Side-by-side benchmark comparison for GPT-5.1-Codex and ScaleDown Compress across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-1-codex-vs-scaledown-compress
- Last updated: October 13, 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-5.1-Codex and ScaleDown Compress.

## Summary

- GPT-5.1-Codex and ScaleDown Compress 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-5.1-Codex | ScaleDown Compress |
|----------|----------|----------|
| Creator | OpenAI | ScaleDown |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Unspecified |
| Context | 400K | null |
| Independent public score (not head-to-head) | 50.17 | null |
| Benchmarks Covered | 4 | 0 |
| Pricing (input/output) | $1.25 / $10.00 | $0.05 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.1-Codex public-lane score: Coming soon
- ScaleDown Compress public-lane score: Coming soon

| Benchmark | GPT-5.1-Codex | ScaleDown Compress | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 49.68% | Coming soon | Coming soon |
| JobBench | 26.2% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.1-Codex public-lane score: 33.6 (Estimated · #81/148)
- ScaleDown Compress public-lane score: Coming soon

| Benchmark | GPT-5.1-Codex | ScaleDown Compress | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 13.12% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.6% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.1-Codex public-lane score: 73.5 (Unranked · 2 rankable rows)
- ScaleDown Compress public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.1-Codex public-lane score: 71.3 (Unranked · 1 rankable row)
- ScaleDown Compress public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.1-Codex public-lane score: 51.4 (Estimated · #71/180)
- ScaleDown Compress public-lane score: Coming soon

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.1-Codex public-lane score: 85.6 (#47/127)
- ScaleDown Compress public-lane score: Coming soon

## FAQ

### Can I compare GPT-5.1-Codex and ScaleDown Compress 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-5.1-Codex vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gpt-5-1-codex)
- [ScaleDown Compress vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-scaledown-compress)
- [GPT-5.1-Codex vs GPT-6.1 Sol](/compare/gpt-5-1-codex-vs-gpt-6-1-sol)
- [ScaleDown Compress vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-scaledown-compress)

## Explore More

- [GPT-5.1-Codex profile](/models/gpt-5-1-codex)
- [ScaleDown Compress profile](/models/scaledown-compress)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)