Claude Sonnet 5.5 vs GLM 4.5
anthropic/claude-sonnet-5.5 · z-ai/glm-4.5
As of November 5, 2026, GLM 4.5 is the cheaper API on UberLLM: $0.0059 per million input tokens and $0.0216 per million output, versus $0.0638 / $0.3192 for Claude Sonnet 5.5, 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 GLM 4.5 to cut cost; choose Claude Sonnet 5.5 when context size wins. Claude Sonnet 5.5 carries the larger context window (1,000,000 vs 128,000 tokens), which can matter for long-document work.
Claude Sonnet 5.5 vs GLM 4.5, side by side
| Spec | Claude Sonnet 5.5 | GLM 4.5 |
|---|---|---|
| Price · input / 1M | $0.0638 | $0.0059 |
| Price · output / 1M | $0.3192 | $0.0216 |
| Context length | 1,000,000 | 128,000 |
| Max output tokens | 128,000 | 32,768 |
| Input modalities | text, image, file | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | — |
| Reasoning | Yes | Yes |
| % off list | 96.8% off | 99% off |
| First token, median (7 days) | 2.1 s (445 requests) | — |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 5, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Claude Sonnet 5.5 vs GLM 4.5 — FAQ
Is Claude Sonnet 5.5 or GLM 4.5 cheaper?
GLM 4.5 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 5.5 and GLM 4.5?
Claude Sonnet 5.5: $0.0638 in / $0.3192 out per 1M tokens. GLM 4.5: $0.0059 in / $0.0216 out per 1M tokens. That's roughly a 93% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Sonnet 5.5 and GLM 4.5 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.