Claude Sonnet 4.5 vs MoonshotAI: Kimi K3.1 Pro
anthropic/claude-sonnet-4.5 · moonshotai/kimi-k3.1-pro
As of November 9, 2026, MoonshotAI: Kimi K3.1 Pro is the cheaper API on UberLLM: $0.0472 per million input tokens and $0.2361 per million output, versus $0.7035 / $3.52 for Claude Sonnet 4.5, about 93% 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 MoonshotAI: Kimi K3.1 Pro to cut cost; choose Claude Sonnet 4.5 when its capabilities fit your task better.
Claude Sonnet 4.5 vs MoonshotAI: Kimi K3.1 Pro, side by side
| Spec | Claude Sonnet 4.5 | MoonshotAI: Kimi K3.1 Pro |
|---|---|---|
| Price · input / 1M | $0.7035 | $0.0472 |
| Price · output / 1M | $3.52 | $0.2361 |
| Context length | 198,000 | 1,048,576 |
| Max output tokens | 64,000 | 524,288 |
| Input modalities | text, image | text, image, video |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 76.6% off | 97.6% off |
| First token, median (7 days) | — | 4.2 s (190 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 9, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Claude Sonnet 4.5 vs MoonshotAI: Kimi K3.1 Pro — FAQ
Is Claude Sonnet 4.5 or MoonshotAI: Kimi K3.1 Pro cheaper?
MoonshotAI: Kimi K3.1 Pro is cheaper on a blended token mix, by about 93%. 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 Claude Sonnet 4.5 and MoonshotAI: Kimi K3.1 Pro?
Claude Sonnet 4.5: $0.7035 in / $3.52 out per 1M tokens. MoonshotAI: Kimi K3.1 Pro: $0.0472 in / $0.2361 out per 1M tokens. That's roughly a 93% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Sonnet 4.5 and MoonshotAI: Kimi K3.1 Pro 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.