# Gemini 4 Carbon vs GPT-5.4 nano

> Side-by-side benchmark comparison for Gemini 4 Carbon and GPT-5.4 nano across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-4-carbon-vs-gpt-5-4-nano
- Last updated: October 28, 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 Gemini 4 Carbon and GPT-5.4 nano.

## Summary

- Gemini 4 Carbon and GPT-5.4 nano 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 | Gemini 4 Carbon | GPT-5.4 nano |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | null | 400K |
| Independent public score (not head-to-head) | 88.42 | 46.19 |
| Benchmarks Covered | 9 | 23 |
| Pricing (input/output) | $2.00 / $10.00 | $0.20 / $1.25 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-5.4 nano public-lane score: 33.7 (Supported · #96/134)

| Benchmark | Gemini 4 Carbon | GPT-5.4 nano | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | 53.9% | Coming soon | Coming soon |
| OSWorld 2.1 Offline | 81.5% | Coming soon | Coming soon |
| CWE-bench v1 | 71.0% | Coming soon | Coming soon |
| ExploitGym | 53.5% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 46.3% | Coming soon |
| OSWorld-Verified | Coming soon | 39% | Coming soon |
| MCP Atlas | Coming soon | 56.1% | Coming soon |
| Toolathlon | Coming soon | 35.5% | Coming soon |
| τ²-bench results | Coming soon | 92.5% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 41.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 4 Carbon public-lane score: 82.2 (Supported · #3/156)
- GPT-5.4 nano public-lane score: 30.1 (Supported · #101/156)

| Benchmark | Gemini 4 Carbon | GPT-5.4 nano | Winner |
|-----------|-----------|-----------|--------|
| FrontierSWE v2 | 61.2% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 46.3% | Coming soon |
| Vibe Code Bench | Coming soon | 26.10% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 84.0% | Coming soon |
| SWE-bench (Vals) | Coming soon | 69.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 4 Carbon public-lane score: 79.5 (Unranked · 2 rankable rows)
- GPT-5.4 nano public-lane score: 40.6 (Unranked · 4 rankable rows)

| Benchmark | Gemini 4 Carbon | GPT-5.4 nano | Winner |
|-----------|-----------|-----------|--------|
| GraphWalks BFS 256K–1M | 96.2% | Coming soon | Coming soon |
| ARC-AGI-1 | Coming soon | 51.50% | Coming soon |
| ARC-AGI-2 | Coming soon | 5.7% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-5.4 nano public-lane score: 52.7 (#51/58)

| Benchmark | Gemini 4 Carbon | GPT-5.4 nano | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 72.5% | Coming soon | Coming soon |
| Blueprint-Bench 2 | 58.6% | Coming soon | Coming soon |
| ExtractBench (LlamaIndex) | Coming soon | 74.90% | Coming soon |
| ParseBench | Coming soon | 43.35% | Coming soon |
| MMMU-Pro | Coming soon | 66.1% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 69.5% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 4 Carbon public-lane score: 88.2 (Supported · #2/178)
- GPT-5.4 nano public-lane score: 39.4 (Supported · #116/178)

| Benchmark | Gemini 4 Carbon | GPT-5.4 nano | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 82.8% | Coming soon |
| HLE | Coming soon | 37.7% | Coming soon |
| HLE w/o tools | Coming soon | 24.3% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 77.5% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 77.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-5.4 nano public-lane score: 93.3 (#12/157)

| Benchmark | Gemini 4 Carbon | GPT-5.4 nano | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 0.0% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 4 Carbon public-lane score: Coming soon
- GPT-5.4 nano public-lane score: 52.3 (Unranked · 2 rankable rows)

| Benchmark | Gemini 4 Carbon | GPT-5.4 nano | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 44.912% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 12.195% | Coming soon |

## FAQ

### Can I compare Gemini 4 Carbon and GPT-5.4 nano 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

- [Gemini 4 Carbon vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gemini-4-carbon)
- [GPT-5.4 nano vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gpt-5-4-nano)
- [Gemini 4 Carbon vs GPT-5.4 Pro](/compare/gemini-4-carbon-vs-gpt-5-4-pro)
- [GPT-5.4 nano vs GPT-5.4 Pro](/compare/gpt-5-4-nano-vs-gpt-5-4-pro)

## Explore More

- [Gemini 4 Carbon profile](/models/gemini-4-carbon)
- [GPT-5.4 nano profile](/models/gpt-5-4-nano)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)