# Gemini 3.1 Flash-Lite vs Seed 2.1 Turbo

> Side-by-side benchmark comparison for Gemini 3.1 Flash-Lite and Seed 2.1 Turbo across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-flash-lite-vs-seed-2-1-turbo
- Last updated: September 10, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemini 3.1 Flash-Lite and Seed 2.1 Turbo 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.
- Seed 2.1 Turbo has the lower published output-token price.
- Gemini 3.1 Flash-Lite has the larger published context window at 1M.

## Model Snapshot

| Property | Gemini 3.1 Flash-Lite | Seed 2.1 Turbo |
|----------|----------|----------|
| Creator | Google | ByteDance |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 256K |
| Independent public score (not head-to-head) | 56.19 | null |
| Benchmarks Covered | 8 | 11 |
| Pricing (input/output) | $0.25 / $1.50 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 42.9 (Estimated · #101/152)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 38.46% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 34.1% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 67.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 37.9 (Estimated · #124/151)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 0.00% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 80.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 62.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 67.6% | Coming soon |
| NL2Repo | Coming soon | 43.7% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 37.5 (Unranked · 1 rankable row)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 73.2% | 82.5% | Seed 2.1 Turbo |
| MathVision | Coming soon | 90.1% | Coming soon |
| MMMU-Pro | Coming soon | 80.1% | Coming soon |
| ZeroBench | Coming soon | 11.0% | Coming soon |
| BabyVision | Coming soon | 62.9% | Coming soon |
| ERQA | Coming soon | 71.3% | Coming soon |
| Video-MME | Coming soon | 89.0% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 51.5 (Estimated · #71/183)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 81.1% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.2% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 67.4% | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemini 3.1 Flash-Lite and Seed 2.1 Turbo?

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 3.1 Flash-Lite vs Seed 2.1 Pro](/compare/gemini-3-1-flash-lite-vs-seed-2-1-pro)
- [Seed 2.1 Turbo vs Seed 2.1 Pro](/compare/seed-2-1-pro-vs-seed-2-1-turbo)
- [Gemini 3.1 Flash-Lite vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-1-flash-lite)
- [Seed 2.1 Turbo vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-seed-2-1-turbo)

## Explore More

- [Gemini 3.1 Flash-Lite profile](/models/gemini-3-1-flash-lite)
- [Seed 2.1 Turbo profile](/models/seed-2-1-turbo)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)