Claude Opus 5 vs Fable 5
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: Claude Opus 5 or Fable 5?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | Claude Opus 5 | Fable 5 | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $5.00 | $2.00 | Fable 5 is 2.5x cheaper |
| Output Cost / 1M Tokens | $25.00 | $8.00 | Fable 5 (212.5% lower) |
| Avg TTFT Response Latency | 340ms | 240ms | Fable 5 (+100ms faster) |
| SWE-bench Verified (Coding) | 82.4% | 58% | Claude Opus 5 (+24.4% lead) |
| Inference Value Score (IVR) | 42.7 / 100 | 59.8 / 100 | Fable 5 (+17.1 pts) |
Interactive Monthly Token Economics & ROI Forecaster
Model your expected production workload across prompt (input) and completion (output) tokens.
Estimated Monthly Spend
$5/1M in · $25/1M out
$2/1M in · $8/1M out
When to Choose Claude Opus 5
Choose Claude Opus 5 when you need Pinnacle autonomous software architecture, whole-system enterprise codebases, PhD-level scientific synthesis, and complex multi-agent delegation. and have an infrastructure budget aligned with $5.00/1M tokens.
When to Choose Fable 5
Choose Fable 5 when you need Long-horizon multi-agent world simulations, narrative engine synthesis, interactive character memory, and creative reasoning. and prioritize Fable Studio ecosystem integration at $2.00/1M tokens.
Related Questions & Decision Factors
Which is cheaper: Claude Opus 5 or Fable 5?
Fable 5 is cheaper at $2.00/1M input tokens compared to $5.00/1M for Claude Opus 5.
Which model has lower latency: Claude Opus 5 or Fable 5?
Fable 5 delivers faster response times with an average TTFT of 240ms vs 340ms for Claude Opus 5.
When should you choose Claude Opus 5?
Choose Claude Opus 5 when you need Pinnacle autonomous software architecture, whole-system enterprise codebases, PhD-level scientific synthesis, and complex multi-agent delegation. and have an infrastructure budget aligned with $5.00/1M tokens.
When should you choose Fable 5?
Choose Fable 5 when you need Long-horizon multi-agent world simulations, narrative engine synthesis, interactive character memory, and creative reasoning. and prioritize Fable Studio ecosystem integration at $2.00/1M tokens.