Claude Opus 5.5 vs GLM 5.3
anthropic/claude-opus-5.5 · z-ai/glm-5.3
As of October 24, 2026, GLM 5.3 is the cheaper API on UberLLM: $0.0044 per million input tokens and $0.0789 per million output, versus $2.29 / $11.43 for Claude Opus 5.5 — about 99% 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 GLM 5.3 to cut cost; choose Claude Opus 5.5 when its capabilities fit your task better.
Claude Opus 5.5 vs GLM 5.3, side by side
| Spec | Claude Opus 5.5 | GLM 5.3 |
|---|---|---|
| Price · input / 1M | $2.29 | $0.0044 |
| Price · output / 1M | $11.43 | $0.0789 |
| 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 |
| Cheapest seller | UberLLM | UberLLM |
| % off list | 43% off | 95% off |
Live prices via UberLLM, routed to the cheapest healthy seller. The price shown includes UberLLM’s 10% fee. Updated October 24, 2026.
Claude Opus 5.5 vs GLM 5.3 — FAQ
Is Claude Opus 5.5 or GLM 5.3 cheaper?
GLM 5.3 is cheaper on a blended token mix, by about 99%. 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 Claude Opus 5.5 and GLM 5.3?
Claude Opus 5.5: $2.29 in / $11.43 out per 1M tokens. GLM 5.3: $0.0044 in / $0.0789 out per 1M tokens. That's roughly a 99% blended difference. Prices are live and include UberLLM's 10% fee.
Can I use both Claude Opus 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.