GPT Chat Latest 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 GPT Chat Latest if you need
- ✓Seamless multi-turn dialogue and creative/analytical flexibility on text, image, and file inputs
- ✓Strong performance specifically on extended documents up to 400k tokens
- ✓Tasks where natural conversational flow matters more than raw context size
Choose Grok 4.20 if you need
- ✓Extremely large contexts up to 2M tokens at the lowest listed price of $2.5/M
- ✓Fast measured output speed of 168.03 t/s with native multimodal text/image/file support
- ✓Maximum-scale document or file processing where cost per million tokens is critical
Verdict
Grok 4.20 leads on cost-efficiency and maximum context scale with its 2M token window and $2.5/M pricing versus GPT Chat Latest's 400k context and $30/M. GPT Chat Latest offers stronger documented flexibility for creative/analytical multi-turn work and extended-document handling within its smaller window. Neither model discloses intelligence index or speed for GPT Chat Latest, leaving Grok 4.20 ahead on the measurable performance metrics provided.
GPT Chat Latest vs Grok 4.20: side by side
| Spec | GPT Chat Latest | Grok 4.20 | Winner |
|---|---|---|---|
| Intelligence | — | 49.3 | Tie |
| Output speed | — | 168 t/s | Tie |
| Output price | $30.00/1M | $2.50/1M | Grok 4.20 |
| Context | 400K | 2000K | Grok 4.20 |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | OpenAI | xAI | Tie |
Detailed analysis
Pricing
Winner: Grok 4.20Grok 4.20 lists output price at $2.5 per million tokens. GPT Chat Latest lists $30 per million tokens. This gives Grok 4.20 a clear cost advantage on the provided data.
Context Window
Winner: Grok 4.20Grok 4.20 supports up to 2 million tokens. GPT Chat Latest supports 400,000 tokens. Grok 4.20 therefore handles substantially larger inputs according to the facts.
Speed & Intelligence Metrics
Winner: Grok 4.20Grok 4.20 reports output speed of 168.03 tokens per second and intelligence index of 49.3. No corresponding numbers are given for GPT Chat Latest, so Grok leads on disclosed quantitative metrics.
Multimodal & Dialogue Strengths
Winner: GPT Chat LatestGPT Chat Latest lists explicit strengths in natural multi-turn dialogue and flexible creative/analytical tasks. Grok 4.20 emphasizes native multimodal integration and large-context handling but does not highlight dialogue flexibility.
GPT Chat Latest
Pros
- +Seamless handling of text, image, and file inputs
- +Strong performance on extended documents
- +Flexible across creative and analytical tasks
- +Natural multi-turn dialogue
Cons
- –Can still hallucinate facts or details
- –Large context increases cost and latency
- –No native real-time external tool 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: GPT Chat Latest vs Grok 4.20
Choose Grok 4.20 when maximum context, lower cost, and known speed matter most. Choose GPT Chat Latest when multi-turn conversational quality and creative flexibility within a 400k window are priorities. Both remain proprietary multimodal models with overlapping text/image/file capabilities.
Frequently asked questions
Grok 4.20 is better on price, context size, and disclosed speed; GPT Chat Latest is better on listed dialogue and task flexibility.