AI Flash Report

Claude Fable 5 vs Gemma 4 12B: Benchmarks, Pricing & Capabilities Compared

TL;DR — Claude Fable 5 wins for reasoning + long-context · Gemma 4 12B wins for general use.

Claude Fable 5 Anthropic
Released
2026-06-09
Context window
1M tokens
Input price
$10.00 / Mtok
Output price
$50.00 / Mtok
Gemma 4 12B Google
Released
2026-06-03
Context window
131K tokens
Input price
$0.00 / Mtok
Output price
$0.00 / Mtok

Benchmark comparison

Benchmark Claude Fable 5 Gemma 4 12B
AA Intelligence Index 64.9 29.2
GPQA Diamond 92.6% 75.3%
HLE 53.3% 14.8%
IF-Bench 63.5% 73.5%
LiveCodeBench Reasoning 70.0% 55.3%
SciCode 60.2% 38.2%
TAU2-bench 98.5% 36.3%
TerminalBench-Hard 62.9% 18.2%

Pricing comparison

Metric Claude Fable 5 Gemma 4 12B
Input ($/Mtok) $10.00 $0.00
Output ($/Mtok) $50.00 $0.00
Cached input ($/Mtok)
Cost per 1M-token roundtrip (1M in + 1M out) $60.00 $0.00

Context window & modalities

Attribute Claude Fable 5 Gemma 4 12B
Context window 1M tokens 131K tokens
Input modalities text, image text, image, video
Output modalities text text
Knowledge cutoff

Verdict by use case

Coding
Insufficient data
Basis: SWE-bench

No shared coding benchmark.

Reasoning
→ Claude Fable 5
Basis: GPQA Diamond

Claude Fable 5 92.6% vs Gemma 4 12B 75.3% on GPQA Diamond.

Math
Insufficient data
Basis: MATH / AIME

No shared math benchmark.

Long context
→ Claude Fable 5
Basis: Context window

Claude Fable 5 1M tokens vs Gemma 4 12B 131K tokens.

Cost
→ Gemma 4 12B
Basis: Input $/Mtok

Claude Fable 5 $10/Mtok vs Gemma 4 12B $0/Mtok input.

Changelog & releases

Claude Fable 5
Released 2026-06-09
Gemma 4 12B
Released 2026-06-03

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