Claude Fable 5 vs Gemini 2.5 Pro
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Fable 5 by Anthropic wins on 9 of 14 benchmarks against Gemini 2.5 Pro by Google, which leads on 5. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Claude Fable 5 scores 49.7 on AA Intelligence Index compared to Gemini 2.5 Pro's 16.7.
Coding: In coding, Claude Fable 5 scores 95.0% on SWE-bench Verified compared to Gemini 2.5 Pro's 63.8%, while Claude Fable 5 scores 76.5 on AA Coding Index compared to Gemini 2.5 Pro's 33.3, while Claude Fable 5 scores 1334 on Design Arena ELO compared to Gemini 2.5 Pro's 1164, while Claude Fable 5 scores 1309 on Website Arena ELO compared to Gemini 2.5 Pro's 1179.
Reasoning: In reasoning, Claude Fable 5 scores 83.8% on GPQA Diamond compared to Gemini 2.5 Pro's 79.9%, while Claude Fable 5 scores 51 on AA Agentic Index compared to Gemini 2.5 Pro's 3.5, while Claude Fable 5 scores 80.2% on τ²-Bench Airline compared to Gemini 2.5 Pro's 61.3%.
Context: In context, Gemini 2.5 Pro scores 1.0M on Context Length compared to Claude Fable 5's 1.0M.
Pricing Comparison
Claude Fable 5 costs $10.0/1M input tokens and $50.0/1M output tokens, while Gemini 2.5 Pro costs $1.3/1M input and $10.0/1M output. Gemini 2.5 Pro is the more affordable option for API usage.
Speed Comparison
Claude Fable 5 generates output at 60 tok/s compared to Gemini 2.5 Pro's 55 tok/s, and the time to first token is 81680 ms for Claude Fable 5 versus 500 ms for Gemini 2.5 Pro. Claude Fable 5 delivers faster throughput.
Verdict
For developers prioritizing coding and speed, Claude Fable 5 has the edge. For those who value affordability, Gemini 2.5 Pro is the stronger choice.
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Claude Fable 5 vs Gemini 2.5 Pro — FAQ
Which is better, Claude Fable 5 or Gemini 2.5 Pro?
Claude Fable 5 wins on more benchmarks overall (9 vs 5). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Fable 5 compare to Gemini 2.5 Pro for coding?
Claude Fable 5 is better for coding, scoring 95.0% on SWE-bench Verified compared to 63.8%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Fable 5 cheaper than Gemini 2.5 Pro?
Yes, Gemini 2.5 Pro is cheaper. Claude Fable 5 costs $10.0/1M input and $50.0/1M output tokens. Gemini 2.5 Pro costs $1.3/1M input and $10.0/1M output tokens.
Which is faster, Claude Fable 5 or Gemini 2.5 Pro?
Claude Fable 5 is faster, generating output at 60 tok/s compared to 55 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Fable 5 vs Gemini 2.5 Pro comparison cover?
This comparison covers 14 benchmarks including SWE-bench Verified, GPQA Diamond, Output Speed, Time to First Token, Input Cost, Output Cost, Context Length, AA Intelligence Index, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.