Gemini 2.5 Pro vs Grok 4.20
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 2.5 Pro if you need
- ✓Native audio and video modality support in addition to text and images
- ✓Strong integration of text with visual and audio data for complex multi-part files
- ✓Access through existing Google infrastructure and tools
Choose Grok 4.20 if you need
- ✓Highest intelligence index (37) and largest context window (2M tokens)
- ✓Lowest output price at $2.5 per 1M tokens
- ✓Slightly higher output speed of 132.31 t/s with native text, image, and file support
Verdict
Grok 4.20 leads on raw intelligence (37 vs 27), context size (2M vs 1M tokens), and price ($2.5 vs $10 per 1M), while Gemini 2.5 Pro uniquely supports audio and video alongside text and images. Grok 4.20 is also marginally faster at 132.31 t/s versus 128.95 t/s. Gemini 2.5 Pro is preferable only when native audio integration or Google infrastructure is required.
Gemini 2.5 Pro vs Grok 4.20: side by side
| Spec | Gemini 2.5 Pro | Grok 4.20 | Winner |
|---|---|---|---|
| Intelligence | 27 | 37 | Grok 4.20 |
| Output speed | 129 t/s | 132 t/s | Grok 4.20 |
| Output price | $10.00/1M | $2.50/1M | Grok 4.20 |
| Context | 1049K | 2000K | Grok 4.20 |
| Params | — | — | Tie |
| Provider | xAI | Tie |
Detailed analysis
Intelligence
Winner: Grok 4.20Grok 4.20 scores 37 on the intelligence index compared to Gemini 2.5 Pro's 27. This gap indicates stronger overall reasoning capability based on the provided metrics.
Context & Speed
Winner: Grok 4.20Grok 4.20 offers a 2M token context versus Gemini 2.5 Pro's 1,048,576 tokens and runs at 132.31 t/s versus 128.95 t/s. Both note potential latency increases with very large inputs.
Pricing
Winner: Grok 4.20Grok 4.20 is priced at $2.5 per 1M output tokens while Gemini 2.5 Pro costs $10 per 1M. This makes Grok 4.20 four times cheaper on output.
Modalities
Winner: Gemini 2.5 ProGemini 2.5 Pro provides native audio and video support plus strong text-visual-audio integration. Grok 4.20 supports text, image, and files but explicitly lacks audio or video.
Gemini 2.5 Pro
Pros
- +Very large context window for extended inputs
- +Native support for multiple modalities in one model
- +Strong integration of text with visual and audio data
Cons
- –Higher latency on very large multimodal inputs
- –Performance can vary with extremely long contexts
- –Dependent on Google infrastructure for access
Grok 4.20
Pros
- +Handles extremely large contexts up to 2M tokens
- +Native support for text, image, and file inputs
- +Multimodal integration in a single model
Cons
- –No audio or video modality support
- –Very large context can increase latency
- –Performance depends on input quality and structure
Summary: Gemini 2.5 Pro vs Grok 4.20
Select Grok 4.20 for higher intelligence, larger context, faster speed, and lower cost in multimodal text and image tasks. Choose Gemini 2.5 Pro only when audio or video modalities and Google ecosystem access are essential.
Frequently asked questions
Grok 4.20 is better on intelligence, context size, speed, and price; Gemini 2.5 Pro is better only for audio and video support.