Claude Opus 5.5 vs Claude Sonnet 4.6
anthropic/claude-opus-5.5 · anthropic/claude-sonnet-4.6
As of October 31, 2026, Claude Sonnet 4.6 is the cheaper API on UberLLM: $1.26 per million input tokens and $6.31 per million output, versus $1.59 / $7.95 for Claude Opus 5.5, about 21% 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 Claude Sonnet 4.6 to cut cost; choose Claude Opus 5.5 when its capabilities fit your task better.
Claude Opus 5.5 vs Claude Sonnet 4.6, side by side
| Spec | Claude Opus 5.5 | Claude Sonnet 4.6 |
|---|---|---|
| Price · input / 1M | $1.59 | $1.26 |
| Price · output / 1M | $7.95 | $6.31 |
| Context length | 1,000,000 | 1,000,000 |
| Max output tokens | 128,000 | 64,000 |
| Input modalities | text, image, file | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 60% off | 58% off |
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.
Claude Opus 5.5 vs Claude Sonnet 4.6 — FAQ
Is Claude Opus 5.5 or Claude Sonnet 4.6 cheaper?
Claude Sonnet 4.6 is cheaper on a blended token mix, by about 21%. 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 Opus 5.5 and Claude Sonnet 4.6?
Claude Opus 5.5: $1.59 in / $7.95 out per 1M tokens. Claude Sonnet 4.6: $1.26 in / $6.31 out per 1M tokens. That's roughly a 21% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Opus 5.5 and Claude Sonnet 4.6 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.