# Gemini 3.8 Live vs GPT-5.1

> Side-by-side benchmark comparison for Gemini 3.8 Live and GPT-5.1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-8-live-vs-gpt-5-1
- Last updated: September 15, 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 Gemini 3.8 Live and GPT-5.1.

## Summary

- Gemini 3.8 Live and GPT-5.1 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 3.8 Live | GPT-5.1 |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 200K |
| Independent public score (not head-to-head) | null | 63.24 |
| Benchmarks Covered | 0 | 4 |
| Pricing (input/output) | $0.75 / $4.50 | $1.25 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.8 Live public-lane score: Coming soon
- GPT-5.1 public-lane score: 59.6 (Estimated · #23/153)

| Benchmark | Gemini 3.8 Live | GPT-5.1 | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | Coming soon | 41.24% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.8 Live public-lane score: Coming soon
- GPT-5.1 public-lane score: 45 (Supported · #91/152)

| Benchmark | Gemini 3.8 Live | GPT-5.1 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | Coming soon | 24.61% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.8 Live public-lane score: Coming soon
- GPT-5.1 public-lane score: 71.2 (Unranked · 1 rankable row)

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.8 Live public-lane score: Coming soon
- GPT-5.1 public-lane score: 76 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.8 Live public-lane score: Coming soon
- GPT-5.1 public-lane score: 58.2 (Estimated · #41/183)

### Instruction Following

- Winner: Insufficient shared evidence
- Gemini 3.8 Live public-lane score: Coming soon
- GPT-5.1 public-lane score: 89.3 (#26/123)

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3.8 Live public-lane score: Coming soon
- GPT-5.1 public-lane score: 49.2 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.8 Live | GPT-5.1 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 31.034% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 12.500% | Coming soon |

## FAQ

### Can I compare Gemini 3.8 Live and GPT-5.1 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 3.8 Live vs Gemini 3.8 Live Extended Thinking](/compare/gemini-3-8-live-vs-gemini-3-8-live-extended-thinking)
- [GPT-5.1 vs Gemini 3.8 Live Extended Thinking](/compare/gemini-3-8-live-extended-thinking-vs-gpt-5-1)
- [Gemini 3.8 Live vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-8-live)
- [GPT-5.1 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gpt-5-1)

## Explore More

- [Gemini 3.8 Live profile](/models/gemini-3-8-live)
- [GPT-5.1 profile](/models/gpt-5-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)