Claude Fable 5 vs Claude Opus 5
Claude Fable 5 (Anthropic) versus Claude Opus 5 (Anthropic): API pricing, context window, capabilities and uptime, from the same data as each model page, at the SoleAPI default channel price. Input costs 15 Credits / M for Claude Fable 5 and 3.25 Credits / M for Claude Opus 5, so Claude Opus 5 is 78% cheaper. Context windows are 1M and 1M.
Specs side by side
| Item | Claude Fable 5claude-fable-5 | Claude Opus 5claude-opus-5 |
|---|---|---|
| Input (prompt) · Credits / M | 15≈ $2.26 | 3.25≈ $0.49 |
| Output (completion) · Credits / M | 75≈ $11.30 | 16.25≈ $2.45 |
| Cache read · Credits / M | 1.5 | 0.325 |
| Context window | 1M | 1M |
| Max output | 128K | 128K |
| 7-day uptime | 100.0% | 100.0% |
| Latest probe latency | 4.07 s | 2.04 s |
| Measured throughput | 44.6 t/s | 50.4 t/s |
| Protocols | Anthropic Messages / OpenAI Responses | Anthropic Messages / OpenAI Responses |
| Sample monthly cost (10M in + 2M out) | 300≈ $45.20 | 65≈ $9.79 |
Prices are the SoleAPI default channel price in Credits (1 Credit = ¥1); green marks the better side. Uptime and latency come from SoleAPI probes; a dash means the model is not probed yet.
Capabilities
FAQ
Which is cheaper, Claude Fable 5 or Claude Opus 5?
At the SoleAPI default channel price, Claude Fable 5 input costs 15 Credits / M and Claude Opus 5 input costs 3.25 Credits / M, so Claude Opus 5 is 78% cheaper. Output and cache prices are in the specs table above.
Which has the larger context window, Claude Fable 5 or Claude Opus 5?
Claude Fable 5 offers 1M tokens, Claude Opus 5 offers 1M tokens.
Can I switch between Claude Fable 5 and Claude Opus 5 at any time?
Yes. SoleAPI calls every model with the same API key; switching is just changing the model field in the request, and billing is split per model in one console.
How do the capabilities of Claude Fable 5 and Claude Opus 5 differ?
Their capability flags are identical. Every other capability is either supported by both or by neither; see the capability table above.
More comparisons
One API key for both Claude Fable 5 and Claude Opus 5
Free credits on sign-up, pay as you go, no monthly fee.