Claude Fable 5 vs Claude Opus 4.8
anthropic/claude-fable-5 · anthropic/claude-opus-4.8
As of November 1, 2026, Claude Opus 4.8 is the cheaper API on UberLLM: $0.2485 per million input tokens and $1.24 per million output, versus $1.36 / $6.82 for Claude Fable 5, about 82% 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 Claude Opus 4.8 to cut cost; choose Claude Fable 5 when its capabilities fit your task better.
Claude Fable 5 vs Claude Opus 4.8, side by side
| Spec | Claude Fable 5 | Claude Opus 4.8 |
|---|---|---|
| Price · input / 1M | $1.36 | $0.2485 |
| Price · output / 1M | $6.82 | $1.24 |
| Context length | 1,000,000 | 1,000,000 |
| Max output tokens | 128,000 | 128,000 |
| Input modalities | text, image | text, image |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 86.4% off | 95% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 1, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Claude Fable 5 vs Claude Opus 4.8 — FAQ
Is Claude Fable 5 or Claude Opus 4.8 cheaper?
Claude Opus 4.8 is cheaper on a blended token mix, by about 82%. 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 Fable 5 and Claude Opus 4.8?
Claude Fable 5: $1.36 in / $6.82 out per 1M tokens. Claude Opus 4.8: $0.2485 in / $1.24 out per 1M tokens. That's roughly a 82% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Fable 5 and Claude Opus 4.8 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.