# Gemini 3.8 Live Extended Thinking vs Grok Voice Think Fast 2.0

> Side-by-side benchmark comparison for Gemini 3.8 Live Extended Thinking and Grok Voice Think Fast 2.0 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-8-live-extended-thinking-vs-grok-voice-think-fast-2-0
- 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 Extended Thinking and Grok Voice Think Fast 2.0.

## Summary

- Gemini 3.8 Live Extended Thinking and Grok Voice Think Fast 2.0 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 Extended Thinking | Grok Voice Think Fast 2.0 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 128K | N/A |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 0 | 0 |
| Pricing (input/output) | $0.75 / $4.50 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

## FAQ

### Can I compare Gemini 3.8 Live Extended Thinking and Grok Voice Think Fast 2.0 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 Extended Thinking vs Gemini 3.8 Live](/compare/gemini-3-8-live-vs-gemini-3-8-live-extended-thinking)
- [Grok Voice Think Fast 2.0 vs Gemini 3.8 Live](/compare/gemini-3-8-live-vs-grok-voice-think-fast-2-0)
- [Gemini 3.8 Live Extended Thinking vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-8-live-extended-thinking)
- [Grok Voice Think Fast 2.0 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-grok-voice-think-fast-2-0)

## Explore More

- [Gemini 3.8 Live Extended Thinking profile](/models/gemini-3-8-live-extended-thinking)
- [Grok Voice Think Fast 2.0 profile](/models/grok-voice-think-fast-2-0)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)