Claude Opus 5.5 vs Claude Sonnet 5.5
anthropic/claude-opus-5.5 · anthropic/claude-sonnet-5.5
As of October 24, 2026, Claude Sonnet 5.5 is the cheaper API on UberLLM: $0.2336 per million input tokens and $1.17 per million output, versus $0.4563 / $2.28 for Claude Opus 5.5 — about 49% 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 Claude Sonnet 5.5 to cut cost; choose Claude Opus 5.5 when its capabilities fit your task better.
Claude Opus 5.5 vs Claude Sonnet 5.5, side by side
| Spec | Claude Opus 5.5 | Claude Sonnet 5.5 |
|---|---|---|
| Price · input / 1M | $0.4563 | $0.2336 |
| Price · output / 1M | $2.28 | $1.17 |
| Context length | 1,000,000 | 1,000,000 |
| Max output tokens | 128,000 | 128,000 |
| Input modalities | text, image, file | text, image, file |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| Cheapest seller | UberLLM | UberLLM |
| % off list | 90% off | 89% 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 Claude Sonnet 5.5 — FAQ
Is Claude Opus 5.5 or Claude Sonnet 5.5 cheaper?
Claude Sonnet 5.5 is cheaper on a blended token mix, by about 49%. 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 Claude Sonnet 5.5?
Claude Opus 5.5: $0.4563 in / $2.28 out per 1M tokens. Claude Sonnet 5.5: $0.2336 in / $1.17 out per 1M tokens. That's roughly a 49% blended difference. Prices are live and include UberLLM's 10% fee.
Can I use both Claude Opus 5.5 and Claude Sonnet 5.5 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.