Head to head
Claude 2 (Anthropic) and FLAN 137B (Google Research) are both frontier AI models. Claude 2 was published in July 2023 and FLAN 137B in September 2021.
Claude 2 was trained on 3.9×10²⁴ FLOP, about 1.9x the compute of FLAN 137B at 2×10²⁴ FLOP. Training compute is the closest available proxy for how much was invested in a model, though it says nothing on its own about how well that compute was spent.
These two models share no benchmark on which both have been scored, so no direct performance comparison is possible here. The specification table below is a comparison of inputs, not of results.
Specifications
Anthropic
Organization
Google Research
Jul 11, 2023
Published
Sep 3, 2021
3.9×10²⁴ FLOP
Training compute1.9x
2×10²⁴ FLOP
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Parameters
137B
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Dataset size
2.5T
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Training hardware
Google TPU v3
$5M
Training cost (2023 USD)
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API access
Accessibility
Unreleased
No
Open weights
No
United States
Country
United States
Related comparisons
Grok 4 vs Claude 2GPT-4.5 vs Claude 2Grok 3 vs Claude 2Llama 4 Behemoth (preview) vs Claude 2Gemini 1.0 Ultra vs Claude 2Llama Nemotron Ultra 253B vs Claude 2Llama 3.1-405B vs Claude 2Grok-2 vs Claude 2GPT-4 (Jun 2023) vs Claude 2GPT-4 (Jun 2023) vs FLAN 137BGPT-4 (Mar 2023) vs Claude 2GPT-4 (Mar 2023) vs FLAN 137B
SourceEpoch AI, 'AI Models'. Published online at epoch.ai. Retrieved 2026-07-29 from https://epoch.ai/data/ai-models. Licensed under CC BY 4.0.