Claude Fable 5 vs Claude Opus 4
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Fable 5 by Anthropic wins on 9 of 10 benchmarks against Claude Opus 4 by Anthropic, which leads on 1. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, Claude Fable 5 scores 95.0% on SWE-bench Verified compared to Claude Opus 4's 72.5%, while Claude Fable 5 scores 1334 on Design Arena ELO compared to Claude Opus 4's 1171, while Claude Fable 5 scores 1309 on Website Arena ELO compared to Claude Opus 4's 1177.
Reasoning: In reasoning, Claude Fable 5 scores 83.8% on GPQA Diamond compared to Claude Opus 4's 79.6%.
Context: In context, Claude Fable 5 scores 1.0M on Context Length compared to Claude Opus 4's 200K.
Pricing Comparison
Claude Fable 5 costs $10.0/1M input tokens and $50.0/1M output tokens, while Claude Opus 4 costs $15.0/1M input and $75.0/1M output. Claude Fable 5 is the more affordable option for API usage.
Speed Comparison
Claude Fable 5 generates output at 60 tok/s compared to Claude Opus 4's 50 tok/s, and the time to first token is 81680 ms for Claude Fable 5 versus 550 ms for Claude Opus 4. Claude Fable 5 delivers faster throughput.
Verdict
Claude Fable 5 leads across the board in coding, affordability, speed, making it the stronger overall choice in this comparison.
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Claude Fable 5 vs Claude Opus 4 — FAQ
Which is better, Claude Fable 5 or Claude Opus 4?
Claude Fable 5 wins on more benchmarks overall (9 vs 1). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Fable 5 compare to Claude Opus 4 for coding?
Claude Fable 5 is better for coding, scoring 95.0% on SWE-bench Verified compared to 72.5%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Fable 5 cheaper than Claude Opus 4?
Yes, Claude Fable 5 is cheaper. Claude Fable 5 costs $10.0/1M input and $50.0/1M output tokens. Claude Opus 4 costs $15.0/1M input and $75.0/1M output tokens.
Which is faster, Claude Fable 5 or Claude Opus 4?
Claude Fable 5 is faster, generating output at 60 tok/s compared to 50 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Fable 5 vs Claude Opus 4 comparison cover?
This comparison covers 10 benchmarks including SWE-bench Verified, GPQA Diamond, Output Speed, Time to First Token, Input Cost, Output Cost, Context Length, Cached Input Cost, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.