GPT-4o vs Grok 4.6
openai/gpt-4o · x-ai/grok-4.6
As of November 4, 2026, GPT-4o is the cheaper API on UberLLM: $0.1489 per million input tokens and $0.5955 per million output, versus $0.2107 / $0.6320 for Grok 4.6, about 8% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GPT-4o to cut cost; choose Grok 4.6 when context size wins. Grok 4.6 carries the larger context window (500,000 vs 128,000 tokens), which can matter for long-document work.
GPT-4o vs Grok 4.6, side by side
| Spec | GPT-4o | Grok 4.6 |
|---|---|---|
| Price · input / 1M | $0.1489 | $0.2107 |
| Price · output / 1M | $0.5955 | $0.6320 |
| Context length | 128,000 | 500,000 |
| Max output tokens | 16,384 | 200,000 |
| Input modalities | text, image | text, image, file |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | — | Yes |
| % off list | 94% off | 89.5% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 4, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
GPT-4o vs Grok 4.6 — FAQ
Is GPT-4o or Grok 4.6 cheaper?
GPT-4o is cheaper on a blended token mix, by about 8%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between GPT-4o and Grok 4.6?
GPT-4o: $0.1489 in / $0.5955 out per 1M tokens. Grok 4.6: $0.2107 in / $0.6320 out per 1M tokens. That's roughly a 8% blended difference. Prices are live; UberLLM adds no fee.
Can I use both GPT-4o and Grok 4.6 with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.