Compare · ModelsLive · 2 picked · head to head
Claude Fable 5.2 vs GPT-6.1 Terra
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Fable 5.2 wins on 6/9 benchmarks
Claude Fable 5.2 wins 6 of 9 shared benchmarks. Leads in general · math.
Category leads
general·Claude Fable 5.2math·Claude Fable 5.2knowledge·GPT-6.1 Terra
Hype vs Reality
Attention vs performance
Claude Fable 5.2
#1 by perf·#6 by attention
GPT-6.1 Terra
#14 by perf·#2 by attention
Best value
GPT-6.1 Terra
6.8x better value than Claude Fable 5.2
Claude Fable 5.2
3.6 pts/$
$24.00/M
GPT-6.1 Terra
24.2 pts/$
$3.00/M
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
9 benchmarks · 2 models
Claude Fable 5.2GPT-6.1 Terra
Ebr Bench
Claude Fable 5.2 leads by +12.4
Claude Fable 5.2
90.5
GPT-6.1 Terra
78.1
FrontierMath-Tier-4-v2-Private
Claude Fable 5.2 leads by +7.3
Claude Fable 5.2
100.0
GPT-6.1 Terra
92.7
FrontierMath-Tiers-1-3-v2-Private
Claude Fable 5.2 leads by +4.3
Claude Fable 5.2
100.0
GPT-6.1 Terra
95.7
Furniture Assembly
Claude Fable 5.2 leads by +15.5
Claude Fable 5.2
85.7
GPT-6.1 Terra
70.2
GPQA diamond
GPT-6.1 Terra leads by +0.6
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Fable 5.2
95.7
GPT-6.1 Terra
96.3
Mystery Game Puzzles
Claude Fable 5.2 leads by +17.6
Claude Fable 5.2
89.0
GPT-6.1 Terra
71.4
OTIS Mock AIME 2024-2025
GPT-6.1 Terra leads by +0.3
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Fable 5.2
99.7
GPT-6.1 Terra
100.0
SimpleQA Verified
Claude Fable 5.2 leads by +36.7
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Fable 5.2
94.0
GPT-6.1 Terra
57.3
SpireClimb
GPT-6.1 Terra leads by +2.7
Claude Fable 5.2
19.6
GPT-6.1 Terra
22.3
Full benchmark table
| Benchmark | Claude Fable 5.2 | GPT-6.1 Terra |
|---|---|---|
Ebr Bench | 90.5 | 78.1 |
FrontierMath-Tier-4-v2-Private | 100.0 | 92.7 |
FrontierMath-Tiers-1-3-v2-Private | 100.0 | 95.7 |
Furniture Assembly | 85.7 | 70.2 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 95.7 | 96.3 |
Mystery Game Puzzles | 89.0 | 71.4 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 99.7 | 100.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 94.0 | 57.3 |
SpireClimb | 19.6 | 22.3 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $8.00 | $40.00 | 1.0M tokens (~500 books) | $160.00 | |
| $1.00 | $5.00 | 1.1M tokens (~525 books) | $20.00 |
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