# Gemini 3.8 Flash vs Gemini 3 Flash

> Side-by-side benchmark comparison for Gemini 3.8 Flash and Gemini 3 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-8-flash-vs-gemini-3-flash
- Last updated: October 17, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Gemini 3.8 Flash if you want the stronger benchmark profile. Gemini 3 Flash only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.8 Flash leads overall 69.25 to 54.28.
- The clearest category separation is in agentic, where the averages are 65.9 for Gemini 3.8 Flash and 32.4 for Gemini 3 Flash.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 81.3% and 53.9%.
- Gemini 3 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Gemini 3.8 Flash | Gemini 3 Flash |
|----------|----------|----------|
| Creator | Google | Google |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 1M | 1M |
| Overall Score | 69.25 | 54.28 |
| Benchmarks Covered | 31 | 11 |
| Pricing (input/output) | $0.75 / $3.75 | $0.50 / $3.00 |

## Category Breakdown

### Agentic

- Winner: Gemini 3.8 Flash
- Gemini 3.8 Flash public-lane score: 65.9 (Supported · #16/128)
- Gemini 3 Flash public-lane score: 32.4 (Supported · #88/128)

| Benchmark | Gemini 3.8 Flash | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| Finance Agent v2 | 61.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 89.4% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 19.10% | Coming soon | Coming soon |
| OSWorld 2.0 | 59.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 81.3% | 53.9% | Gemini 3.8 Flash |
| ApprenticeBench | 24% | Coming soon | Coming soon |
| Hermes Index | 38.1% | Coming soon | Coming soon |
| Hermes Bench | 62.2% | Coming soon | Coming soon |
| MazeBench | 4% | Coming soon | Coming soon |
| Claw-Eval | Coming soon | 49.2% | Coming soon |
| Gert Labs | Coming soon | 56.63% | Coming soon |
| JobBench | Coming soon | 11.4% | Coming soon |

### Coding

- Winner: Gemini 3.8 Flash
- Gemini 3.8 Flash public-lane score: 61 (Supported · #17/150)
- Gemini 3 Flash public-lane score: 32.1 (Supported · #88/150)

| Benchmark | Gemini 3.8 Flash | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 73.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 89.4% | Coming soon | Coming soon |
| CursorBench 3.2 | 69.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 89.5% | 85.6% | Gemini 3.8 Flash |
| SWE-bench (Vals) | 80.0% | 75.0% | Gemini 3.8 Flash |
| FrontierSWE v2 | 19.6% | Coming soon | Coming soon |
| CursorBench 4.0 | 39.6% | Coming soon | Coming soon |
| Bug Hunt Bench | 18.0 fixes | Coming soon | Coming soon |
| Vibe Code Bench | Coming soon | 20.20% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemini 3.8 Flash public-lane score: 74.3 (#17/28)
- Gemini 3 Flash public-lane score: 63.8 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.8 Flash | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 98.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 89.2% | Coming soon | Coming soon |
| ARC-AGI-3 | 10.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Gemini 3.8 Flash public-lane score: 87.3 (#9/54)
- Gemini 3 Flash public-lane score: 80.3 (Unranked · 1 rankable row)

| Benchmark | Gemini 3.8 Flash | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| CharXiv w/o tools | 86.2% | Coming soon | Coming soon |
| LVBench | 87.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Gemini 3.8 Flash
- Gemini 3.8 Flash public-lane score: 73.5 (Supported · #13/184)
- Gemini 3 Flash public-lane score: 55.7 (Supported · #55/184)

| Benchmark | Gemini 3.8 Flash | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| HLE-Verified | 54.9% | Coming soon | Coming soon |
| LABBench2 | 86.2% | Coming soon | Coming soon |
| BioMysteryBench (human-solvable) | 88.8% | Coming soon | Coming soon |
| BioMysteryBench (human-difficult) | 56.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 94.4% | 87.9% | Gemini 3.8 Flash |
| MMLU-Pro (Vals) | 90.2% | 88.6% | Gemini 3.8 Flash |

### Instruction Following

- Winner: Not comparable
- Gemini 3.8 Flash public-lane score: Coming soon
- Gemini 3 Flash public-lane score: 66.1 (#76/148)

| Benchmark | Gemini 3.8 Flash | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 5.5% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Gemini 3.8 Flash public-lane score: 69.7 (Unranked · 2 rankable rows)
- Gemini 3 Flash public-lane score: 57.4 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.8 Flash | Gemini 3 Flash | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 68.421% | 51.228% | Gemini 3.8 Flash |
| FrontierMath v2 (Tier 4) | 21.951% | 17.073% | Gemini 3.8 Flash |

## FAQ

### Which is better overall, Gemini 3.8 Flash or Gemini 3 Flash?

Gemini 3.8 Flash is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.8 Flash and Gemini 3 Flash?

The widest category gap is in agentic, where the averages are 65.9 for Gemini 3.8 Flash and 32.4 for Gemini 3 Flash.

### How many benchmarks does Gemini 3.8 Flash cover on BenchLM?

Gemini 3.8 Flash currently has 31 sourced benchmark scores on BenchLM.

### How many benchmarks does Gemini 3 Flash cover on BenchLM?

Gemini 3 Flash currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.8 Flash vs Gemini 3.8 Flash Cyber](/compare/gemini-3-8-flash-vs-gemini-3-8-flash-cyber)
- [Gemini 3 Flash vs Gemini 3.8 Flash Cyber](/compare/gemini-3-8-flash-cyber-vs-gemini-3-flash)
- [Gemini 3.8 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-8-flash)
- [Gemini 3 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-flash)

## Explore More

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