Claude Sonnet 5.5 vs GLM 5.3
anthropic/claude-sonnet-5.5 · z-ai/glm-5.3
As of October 31, 2026, GLM 5.3 is the cheaper API on UberLLM: $0.0022 per million input tokens and $0.0448 per million output, versus $0.7610 / $3.80 for Claude Sonnet 5.5, about 99% less when output is 3 tokens for every input token. These are the median prices buyers paid over the last 24 hours. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose GLM 5.3 to cut cost; choose Claude Sonnet 5.5 when its capabilities fit your task better.
Claude Sonnet 5.5 vs GLM 5.3, side by side
| Spec | Claude Sonnet 5.5 | GLM 5.3 |
|---|---|---|
| Price · input / 1M | $0.7610 | $0.0022 |
| Price · output / 1M | $3.80 | $0.0448 |
| Context length | 1,000,000 | 1,000,000 |
| Max output tokens | 128,000 | 131,072 |
| Input modalities | text, image, file | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | — |
| Reasoning | Yes | Yes |
| % off list | 62% off | 97% off |
| First token, median (7 days) | 2.9 s (134 requests) | 3.5 s (156 requests) |
Median prices buyers paid on UberLLM over the last 24 hours. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated October 31, 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 5.3 — FAQ
Is Claude Sonnet 5.5 or GLM 5.3 cheaper?
GLM 5.3 is cheaper on a blended token mix, by about 99%. 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 5.3?
Claude Sonnet 5.5: $0.7610 in / $3.80 out per 1M tokens. GLM 5.3: $0.0022 in / $0.0448 out per 1M tokens. That's roughly a 99% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Sonnet 5.5 and GLM 5.3 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.