Gemini 3.1 Flash Lite Preview vs Grok 4.20 Multi-Agent
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Quick verdict: which should you choose?
Choose Gemini 3.1 Flash Lite Preview if you need
- ✓fast output at 310.24 t/s and low cost of $1.5 per million tokens
- ✓unified native handling of video, audio, and files alongside text and images
- ✓lightweight design for speed on document and media tasks with 1M context
- ✓broad multimodal coverage when preview inconsistencies are acceptable
Choose Grok 4.20 Multi-Agent if you need
- ✓extremely long 2M context for massive document or media tasks
- ✓multi-agent coordination for complex workflows handling text, images, and files
- ✓larger context window when audio and video modalities are not required
- ✓xAI provider for multi-agent orchestration despite higher $6/M pricing
Verdict
Gemini 3.1 Flash Lite Preview leads on known speed (310.24 t/s), lower price ($1.5/M), and native video/audio support, while Grok 4.20 Multi-Agent provides a larger 2M context and multi-agent coordination but lacks audio/video and costs four times more. A has a reported intelligence_index of 33.5 where B reports none. Trade-offs center on efficiency and modality breadth versus raw context size and workflow orchestration.
Gemini 3.1 Flash Lite Preview vs Grok 4.20 Multi-Agent: side by side
| Spec | Gemini 3.1 Flash Lite Preview | Grok 4.20 Multi-Agent | Winner |
|---|---|---|---|
| Intelligence | 33.5 | — | Tie |
| Output speed | 310 t/s | — | Tie |
| Output price | $1.50/1M | $6.00/1M | Gemini 3.1 Flash Lite Preview |
| Context | 1049K | 2000K | Grok 4.20 Multi-Agent |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | xAI | Tie |
Detailed analysis
Pricing
Winner: Gemini 3.1 Flash Lite PreviewGemini costs $1.5 per million output tokens versus Grok at $6 per million. The fourfold price difference favors Gemini for high-volume use. Both are proprietary models with no other cost details provided.
Context Length
Winner: Grok 4.20 Multi-AgentGrok supports 2M context tokens compared with Gemini's 1,048,576. This gives Grok the edge for extremely long inputs. Both models list context as a core strength in their descriptions.
Modalities
Winner: Gemini 3.1 Flash Lite PreviewGemini offers unified handling of video, audio, and files in addition to text and images. Grok supports text, images, and files but explicitly lacks audio or video. Gemini's broad native multimodal support is stated as a primary strength.
Speed
Winner: Gemini 3.1 Flash Lite PreviewGemini reports 310.24 tokens per second output speed; Grok provides no speed figure. Gemini is described as lightweight and optimized for speed, while Grok notes potential latency from multi-agent setups. Available data therefore favors Gemini on speed.
Gemini 3.1 Flash Lite Preview
Pros
- +Broad native support for multiple modalities
- +Very large context window for document and media tasks
- +Lightweight design optimized for speed
- +Unified handling of video, audio and files
Cons
- –Preview model may show inconsistent behavior
- –Lite variant trades depth for efficiency
- –Experimental features can be less reliable than stable releases
Grok 4.20 Multi-Agent
Pros
- +Supports extremely long contexts
- +Coordinates multiple agents for workflows
- +Handles text, images, and files natively
Cons
- –Multi-agent setups may add latency
- –Coordination overhead on simple tasks
- –No audio or video modalities
Summary: Gemini 3.1 Flash Lite Preview vs Grok 4.20 Multi-Agent
Choose Gemini 3.1 Flash Lite Preview for speed, cost efficiency, and full video/audio support. Choose Grok 4.20 Multi-Agent when maximum context length and multi-agent workflows matter most and audio/video are unnecessary. The facts show clear specialization rather than overall superiority for either model.
Frequently asked questions
Gemini 3.1 Flash Lite Preview at $1.5 per million output tokens versus Grok 4.20 Multi-Agent at $6 per million.