# Gemini 3.8 Flash Cyber vs Gemini 4 Carbon

> Side-by-side benchmark comparison for Gemini 3.8 Flash Cyber and Gemini 4 Carbon across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-8-flash-cyber-vs-gemini-4-carbon
- Last updated: October 28, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemini 3.8 Flash Cyber and Gemini 4 Carbon share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Gemini 3.8 Flash Cyber has the lower published output-token price.

## Model Snapshot

| Property | Gemini 3.8 Flash Cyber | Gemini 4 Carbon |
|----------|----------|----------|
| Creator | Google | Google |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | null | null |
| Independent public score (not head-to-head) | null | 88.42 |
| Benchmarks Covered | 3 | 9 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.8 Flash Cyber public-lane score: Coming soon
- Gemini 4 Carbon public-lane score: Coming soon

| Benchmark | Gemini 3.8 Flash Cyber | Gemini 4 Carbon | Winner |
|-----------|-----------|-----------|--------|
| CyberGym | 86.2% | Coming soon | Coming soon |
| CWE-Bench | 47.2% | Coming soon | Coming soon |
| AutomationBench | Coming soon | 53.9% | Coming soon |
| OSWorld 2.1 Offline | Coming soon | 81.5% | Coming soon |
| CWE-bench v1 | Coming soon | 71.0% | Coming soon |
| ExploitGym | Coming soon | 53.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.8 Flash Cyber public-lane score: Coming soon
- Gemini 4 Carbon public-lane score: 82.2 (Supported · #3/156)

| Benchmark | Gemini 3.8 Flash Cyber | Gemini 4 Carbon | Winner |
|-----------|-----------|-----------|--------|
| FrontierSWE v2 | Coming soon | 61.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.8 Flash Cyber public-lane score: Coming soon
- Gemini 4 Carbon public-lane score: 79.5 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.8 Flash Cyber | Gemini 4 Carbon | Winner |
|-----------|-----------|-----------|--------|
| GraphWalks BFS 256K–1M | Coming soon | 96.2% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.8 Flash Cyber public-lane score: Coming soon
- Gemini 4 Carbon public-lane score: Coming soon

| Benchmark | Gemini 3.8 Flash Cyber | Gemini 4 Carbon | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | Coming soon | 72.5% | Coming soon |
| Blueprint-Bench 2 | Coming soon | 58.6% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.8 Flash Cyber public-lane score: Coming soon
- Gemini 4 Carbon public-lane score: 88.2 (Supported · #2/178)

### Instruction Following

- Winner: Insufficient shared evidence
- Gemini 3.8 Flash Cyber public-lane score: Coming soon
- Gemini 4 Carbon public-lane score: Coming soon

| Benchmark | Gemini 3.8 Flash Cyber | Gemini 4 Carbon | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 6.0% | 0.0% | Gemini 4 Carbon |

## FAQ

### Is there enough evidence to pick between Gemini 3.8 Flash Cyber and Gemini 4 Carbon?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Gemini 3.8 Flash Cyber vs Gemini 3.8 Flash](/compare/gemini-3-8-flash-vs-gemini-3-8-flash-cyber)
- [Gemini 4 Carbon vs Gemini 3.8 Flash](/compare/gemini-3-8-flash-vs-gemini-4-carbon)
- [Gemini 3.8 Flash Cyber vs Gemini 4 Argon](/compare/gemini-3-8-flash-cyber-vs-gemini-4-argon)
- [Gemini 4 Carbon vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gemini-4-carbon)

## Explore More

- [Gemini 3.8 Flash Cyber profile](/models/gemini-3-8-flash-cyber)
- [Gemini 4 Carbon profile](/models/gemini-4-carbon)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)