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Anthropic

Claude Fable 5

VS
Google

Gemini 3.5 Flash

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Claude Fable 5 is the premium intelligence choice, scoring 25.2% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: Gemini 3.5 Flash is 5.9x cheaper to run and delivers 4.6x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Gemini 3.5 Flash offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Claude Fable 5 fully justifies the cost.

Model Specs

Claude Fable 5

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+25.2%)
80.3%
Reasoning (gpqa-diamond)Winner (+1.9%)
94.1%

Cost & Performance

Cost (per 1M tokens)
$20.00Input: $10.00 | Output: $50.00
Speed
60.3 tps
Context Window
1M tokens
Model Specs

Gemini 3.5 Flash

Benchmarks & Scores

Coding (swe-bench-pro)
55.1%
Reasoning (gpqa-diamond)
92.2%

Cost & Performance

Cost (per 1M tokens)5.9x cheaper
$3.38Input: $1.50 | Output: $9.00
Speed4.6x faster
280 tps
Context Window
1M tokens

Frequently Asked Questions

Gemini 3.5 Flash is cheaper than Claude Fable 5. Gemini 3.5 Flash has a blended cost of $3.38/1M tokens, which is about 5.9x cheaper than Claude Fable 5 at $20.00/1M tokens.

Gemini 3.5 Flash is faster than Claude Fable 5. Gemini 3.5 Flash generates 280 tokens per second (tps) compared to Claude Fable 5 which generates 60.3 tokens per second.

Claude Fable 5 is better for coding tasks. It scores 80.3% on coding evaluations (swe-bench-pro) compared to Gemini 3.5 Flash which scores 55.1%.

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