Grok 4.20 Beta vs Grok 4.3
x-ai/grok-4.20-beta · x-ai/grok-4.3
As of October 24, 2026, Grok 4.3 is the cheaper API on UberLLM: $0.2129 per million input tokens and $0.4258 per million output, versus $0.6204 / $1.24 for Grok 4.20 Beta — about 66% less on a blended 3:1 token mix. Both are reached through one OpenAI-compatible key and routed to the cheapest healthy seller, with UberLLM's 10% fee already included, so the price you see is the price you pay. Choose Grok 4.3 to cut cost; choose Grok 4.20 Beta when context size wins — Grok 4.20 Beta carries the larger context window (2,000,000 vs 1,000,000 tokens), which can matter for long-document work.
Grok 4.20 Beta vs Grok 4.3, side by side
| Spec | Grok 4.20 Beta | Grok 4.3 |
|---|---|---|
| Price · input / 1M | $0.6204 | $0.2129 |
| Price · output / 1M | $1.24 | $0.4258 |
| Context length | 2,000,000 | 1,000,000 |
| Max output tokens | 128,000 | 128,000 |
| Input modalities | text | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | — | Yes |
| Reasoning | Yes | — |
| Cheapest seller | UberLLM | UberLLM |
| % off list | 50% off | 83% off |
Live prices via UberLLM, routed to the cheapest healthy seller. The price shown includes UberLLM’s 10% fee. Updated October 24, 2026.
Grok 4.20 Beta vs Grok 4.3 — FAQ
Is Grok 4.20 Beta or Grok 4.3 cheaper?
Grok 4.3 is cheaper on a blended token mix, by about 66%. UberLLM routes every request to the cheapest healthy seller and bills the price shown, with its 10% fee included.
What's the price difference between Grok 4.20 Beta and Grok 4.3?
Grok 4.20 Beta: $0.6204 in / $1.24 out per 1M tokens. Grok 4.3: $0.2129 in / $0.4258 out per 1M tokens. That's roughly a 66% blended difference. Prices are live and include UberLLM's 10% fee.
Can I use both Grok 4.20 Beta and Grok 4.3 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.