# decider-4b v2 vs GPT-5.5 Pro

> Side-by-side benchmark comparison for decider-4b v2 and GPT-5.5 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/decider-4b-v2-vs-gpt-5-5-pro
- Last updated: October 1, 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 decider-4b v2 and GPT-5.5 Pro.

## Summary

- decider-4b v2 and GPT-5.5 Pro 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 | decider-4b v2 | GPT-5.5 Pro |
|----------|----------|----------|
| Creator | Mapika | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | null | 1M |
| Independent public score (not head-to-head) | null | 74.62 |
| Benchmarks Covered | 2 | 8 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $30.00 / $180.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- decider-4b v2 public-lane score: Coming soon
- GPT-5.5 Pro public-lane score: Coming soon

| Benchmark | decider-4b v2 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | Coming soon | 90.1% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- decider-4b v2 public-lane score: Coming soon
- GPT-5.5 Pro public-lane score: 75.1 (Unranked · 3 rankable rows)

| Benchmark | decider-4b v2 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| JevBench 1.4 | 64.13 | Coming soon | Coming soon |
| JevBench 1.5 | 71.28 | Coming soon | Coming soon |
| ARC-AGI-1 | Coming soon | 95.00% | Coming soon |
| ARC-AGI-2 | Coming soon | 84.2% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- decider-4b v2 public-lane score: Coming soon
- GPT-5.5 Pro public-lane score: Coming soon

| Benchmark | decider-4b v2 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| HLE | Coming soon | 57.2% | Coming soon |
| HLE w/o tools | Coming soon | 43.1% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- decider-4b v2 public-lane score: Coming soon
- GPT-5.5 Pro public-lane score: 70.1 (Unranked · 3 rankable rows)

| Benchmark | decider-4b v2 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath (legacy) | Coming soon | 52.4% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 51.000% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 39.600% | Coming soon |

## FAQ

### Can I compare decider-4b v2 and GPT-5.5 Pro 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

- [decider-4b v2 vs GPT-5.5](/compare/decider-4b-v2-vs-gpt-5-5)
- [GPT-5.5 Pro vs GPT-5.5](/compare/gpt-5-5-vs-gpt-5-5-pro)
- [decider-4b v2 vs GPT-6 Astra](/compare/decider-4b-v2-vs-gpt-6-astra)
- [GPT-5.5 Pro vs GPT-6 Astra](/compare/gpt-5-5-pro-vs-gpt-6-astra)

## Explore More

- [decider-4b v2 profile](/models/decider-4b-v2)
- [GPT-5.5 Pro profile](/models/gpt-5-5-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)