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 WandAPI default channel price. Input costs 6 Credits / M for Claude Fable 5 and 3 Credits / M for Claude Opus 5, so Claude Opus 5 is 50% cheaper. Context windows are 1M and 1M.

Claude Fable 5claude-fable-5
Anthropic
Input (prompt)
6Credits / M
≈ $0.917
Output (completion)
30Credits / M
≈ $4.58
1M context · 128K output91% off
Claude Fable 5 details
Claude Opus 5claude-opus-5
Anthropic
Input (prompt)
3Credits / M
≈ $0.458
Output (completion)
15Credits / M
≈ $2.29
1M context · 128K output91% off
Claude Opus 5 details
Lower input price
Claude Opus 5
50% cheaper

Specs side by side

Item
Claude Fable 5claude-fable-5
Claude Opus 5claude-opus-5
Input (prompt) · Credits / M6≈ $0.9173≈ $0.458
Output (completion) · Credits / M30≈ $4.5815≈ $2.29
Cache read · Credits / M0.60.3
Context window1M1M
Max output128K128K
7-day uptime——
Latest probe latency——
Measured throughput——
ProtocolsAnthropic MessagesAnthropic Messages
Sample monthly cost (10M in + 2M out)120≈ $18.3460≈ $9.17

Prices are the WandAPI default channel price in Credits (1 Credit = ¥1); green marks the better side. Uptime and latency come from WandAPI probes; a dash means the model is not probed yet.

Capabilities

CapabilityClaude Fable 5Claude Opus 5
Vision
Function Calling
Reasoning
Prompt Caching
Streaming
Response Schema
Audio
Video
File Input
Web Search
Realtime
Session
Media
Multipart Form
Binary Response

FAQ

Which is cheaper, Claude Fable 5 or Claude Opus 5?

At the WandAPI default channel price, Claude Fable 5 input costs 6 Credits / M and Claude Opus 5 input costs 3 Credits / M, so Claude Opus 5 is 50% 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. WandAPI 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

Claude Fable 5 vs Claude Fable 5.1Claude Fable 5 vs Claude Haiku 4.5Claude Fable 5 vs Claude Haiku 5.5Claude Fable 5 vs Claude Opus 4.5Claude Fable 5 vs Claude Opus 4.6Claude Fable 5 vs Claude Opus 4.7Claude Fable 5 vs Claude Opus 4.8Claude Opus 5 vs Claude Fable 5.1Claude Opus 5 vs Claude Haiku 4.5Claude Opus 5 vs Claude Haiku 5.5Claude Opus 5 vs Claude Opus 4.5Claude Opus 5 vs Claude Opus 4.6

One API key for both Claude Fable 5 and Claude Opus 5

Free credits on sign-up, pay as you go, no monthly fee.

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