# Gemma 4 26B A4B vs GPT-6 Luna

> Side-by-side benchmark comparison for Gemma 4 26B A4B and GPT-6 Luna across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-26b-a4b-vs-gpt-6-luna
- Last updated: September 22, 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 Gemma 4 26B A4B and GPT-6 Luna.

## Summary

- Gemma 4 26B A4B and GPT-6 Luna 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 | Gemma 4 26B A4B | GPT-6 Luna |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 1.05M |
| Independent public score (not head-to-head) | 55.4 | 62.33 |
| Benchmarks Covered | 4 | 7 |
| Pricing (input/output) | $0.00 / $0.00 | $0.10 / $0.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 52.1 (Estimated · #47/157)
- GPT-6 Luna public-lane score: 56.7 (Estimated · #35/157)

| Benchmark | Gemma 4 26B A4B | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| ExploitGym | Coming soon | 11.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 41.9 (Supported · #113/159)
- GPT-6 Luna public-lane score: 66.6 (Estimated · #11/159)

| Benchmark | Gemma 4 26B A4B | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | Coming soon | 66.6% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 66.2 (Unranked · 2 rankable rows)
- GPT-6 Luna public-lane score: 78.3 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 44.2 (#43/50)
- GPT-6 Luna public-lane score: 71.3 (Unranked · 1 rankable row)

| Benchmark | Gemma 4 26B A4B | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 73.8% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 43 (Supported · #126/189)
- GPT-6 Luna public-lane score: 63.6 (Estimated · #29/189)

| Benchmark | Gemma 4 26B A4B | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Pro | 82.6% | Coming soon | Coming soon |
| HLE | 17.2% | Coming soon | Coming soon |
| HLE w/o tools | 8.7% | Coming soon | Coming soon |
| HealthBench (raw) | Coming soon | 50.0% | Coming soon |
| HealthBench (length-adjusted) | Coming soon | 54.5% | Coming soon |
| HealthBench Professional | Coming soon | 60.8% | Coming soon |
| HealthBench Professional (raw) | Coming soon | 61.2% | Coming soon |
| HealthBench Hard | Coming soon | 31.4% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 87.3 (#31/124)
- GPT-6 Luna public-lane score: Coming soon

## FAQ

### Can I compare Gemma 4 26B A4B and GPT-6 Luna 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

- [Gemma 4 26B A4B vs Gemma 4 31B](/compare/gemma-4-26b-a4b-vs-gemma-4-31b)
- [GPT-6 Luna vs Gemma 4 31B](/compare/gemma-4-31b-vs-gpt-6-luna)
- [Gemma 4 26B A4B vs Gemma 4 12B](/compare/gemma-4-12b-vs-gemma-4-26b-a4b)
- [GPT-6 Luna vs Gemma 4 12B](/compare/gemma-4-12b-vs-gpt-6-luna)

## Explore More

- [Gemma 4 26B A4B profile](/models/gemma-4-26b-a4b)
- [GPT-6 Luna profile](/models/gpt-6-luna)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)