Grok vs ChatGPT on magicdoor.ai (2026): Cost, Context, or Tools?
Last updated: July 21, 2026.
On magicdoor.ai, “Grok vs ChatGPT” means comparing Grok 4.5 with two current OpenAI choices: GPT-5.6 Luna for the lower-cost tier and GPT-5.6 Sol for the stronger tier.
The useful decision is concrete. Choose by token price and context for ordinary chat turns, then switch to an OpenAI model when the workflow needs PDF support or code interpreter.
Quick Picks
| If you care most about... | Start with | Why |
|---|---|---|
| Lowest input price | GPT-5.6 Luna | $1 per 1M input tokens |
| 500K context | Grok 4.5 | Its documented context window is 500K tokens |
| Lower cost than the stronger OpenAI tier | Grok 4.5 | $2 / $6 below 200K prompt tokens versus GPT-5.6 Sol at $5 / $30 |
| PDFs or code interpreter | OpenAI family | Supported OpenAI models provide both on magicdoor.ai |
| Current web information | Search workflow | Use Magicdoor search or a Perplexity model |
At a Glance
| Grok on magicdoor.ai | OpenAI models on magicdoor.ai | |
|---|---|---|
| Current models | Grok 4.5 | GPT-5.6 Luna, GPT-5.6 Sol |
| Standard price | $2 input / $6 output below 200K prompt tokens | Luna: $1 / $6; Sol: $5 / $30 |
| Long-context price | $4 / $12 at 200K+ prompt tokens | No separate tier listed on magicdoor.ai |
| Cached input | $0.30 below 200K; $0.60 at 200K+ | Luna: $0.10; Sol: $0.50 |
| Context | 500K tokens | Check the current model page for each model's limit |
| Image input and reasoning | Yes | Yes |
| PDF support | No | Yes |
| Code interpreter | No | Yes |
| Search and canvas | Available through Magicdoor integrations | Available through Magicdoor integrations |
The Price Ladder
The standard listed rates per 1 million input/output tokens are:
- GPT-5.6 Luna: $1 / $6
- Grok 4.5: $2 / $6 when the prompt is below 200K tokens
- GPT-5.6 Sol: $5 / $30
For a month totaling 100K input tokens and 300K output tokens across requests that each remain below 200K prompt tokens, the approximate usage cost is:
| Model | Approximate usage cost |
|---|---|
| GPT-5.6 Luna | $1.90 |
| Grok 4.5 | $2.00 |
| GPT-5.6 Sol | $9.50 |
That example is not a subscription quote. It isolates model usage before Magicdoor's $6 base subscription, which includes $1 in credits. It also assumes no cached input and no single Grok prompt at or above 200K tokens.
Where Grok 4.5 Fits
Grok 4.5 is the practical starting point when you need its 500K context capacity, want to analyze text and images together, or want a reasoning-capable model with function calling at a lower listed rate than GPT-5.6 Sol.
Watch prompt size on large jobs. At exactly 200K prompt tokens, Grok moves from $2 / $6 to $4 / $12. The context window lets you send more material, but focused context remains easier to verify and costs less.
Where the OpenAI Family Fits
GPT-5.6 Luna is the lower-cost OpenAI starting point. Its input price is below Grok's, and its output price is the same as Grok's standard output rate.
GPT-5.6 Sol is substantially more expensive per token, but supported OpenAI models are the correct route when the conversation needs PDF input or code interpreter. Those features can outweigh token price for file analysis, executable calculations, and data workflows.
A Multi-Model Workflow
You do not need to pick one provider for the entire conversation:
- Start with GPT-5.6 Luna for a low-cost routine turn, or Grok 4.5 for a long-context or image-analysis turn.
- Switch to GPT-5.6 Sol when stronger OpenAI capability is worth the higher rate.
- Use a supported OpenAI model when the task requires a PDF or code interpreter.
- Use Magicdoor's search, image, or canvas integration when the task needs current information or a different output workflow.
- Check the live cost display before and after large requests.
magicdoor.ai preserves the conversation as you switch models, so each turn can use the model that matches its capability and price.
FAQ
Is Grok cheaper than ChatGPT on magicdoor.ai?
It depends on the OpenAI tier. Below 200K prompt tokens, Grok 4.5 costs $2 / $6 per 1 million input/output tokens. GPT-5.6 Luna costs $1 / $6, while GPT-5.6 Sol costs $5 / $30.
What is the main advantage of Grok 4.5?
Grok 4.5 combines a 500K-token context window with text and image input, reasoning, function calling, and lower listed token rates than GPT-5.6 Sol for requests below 200K prompt tokens.
Can Grok do PDFs or code interpreter on magicdoor.ai?
No. Grok 4.5 does not currently support PDF input or code interpreter on magicdoor.ai. Those features are available on supported OpenAI models.
What should I use for current news or live facts?
Use Magicdoor's search integration with the chat model that fits the task, or select Perplexity Reasoning or Deep Research (pplx) for a search-focused workflow.
Do I need separate xAI or ChatGPT subscriptions?
No. On magicdoor.ai, Grok 4.5, GPT-5.6 Luna, and GPT-5.6 Sol are available under one $6 base subscription with $1 in included credits and pay-as-you-go usage.
The Bottom Line
Use GPT-5.6 Luna when the lowest input rate matters, Grok 4.5 when 500K context or its standard price-to-capability mix fits, and GPT-5.6 Sol when the stronger OpenAI tier is worth the cost. Switch to supported OpenAI models for PDFs or code interpreter rather than forcing one model through every step.
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