According to 21 CFR Part 11, electronic signatures must be:

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Cross-Model Comparison

Model	Score	Latency	Tokens In	Tokens Out
GPT-5.4	100.0%	2.6s	58	44
GPT-5.4 mini	100.0%	898ms	58	41
GPT-5.4 nano	100.0%	734ms	58	49
Claude Haiku 4.5	100.0%	3.7s	66	302
Claude Sonnet 4.6	100.0%	8.8s	66	333
Claude Opus 4.6	100.0%	9.2s	66	350
Llama 4 Scout	100.0%	5.9s	62	409
Llama 4 Maverick	100.0%	3.3s	63	324
Llama 3.3 70B Instruct	100.0%	126.4s	63	4,000
Mistral Small 2603	100.0%	1.5s	71	246
Qwen3.5-397B-A17B	100.0%	15.5s	66	856
DeepSeek-V3.2	100.0%	2.9s	56	69
DeepSeek-R1	100.0%	11.1s	62	380
DeepSeek-R1-Distill-Qwen-32B	100.0%	25.3s	58	521
Mistral Large 3 675B	100.0%	2.6s	59	173
Qwen3.5-35B-A3B	100.0%	5.2s	66	631
Gemini 3.1 Pro	100.0%	5.7s	56	507
Gemini 3 Flash	100.0%	2.5s	56	215
Gemini 3.1 Flash-Lite	100.0%	2.0s	56	158
Qwen3.6 27B	100.0%	12.0s	66	919
Qwen3.6 35B A3B	100.0%	8.2s	66	1,540
DeepSeek V4 Pro	100.0%	3.5s	56	228
DeepSeek-V3.2	100.0%	8.2s	56	162
DeepSeek V4 Flash	100.0%	3.0s	56	174
Gemma 4 26B A4B IT	100.0%	40.3s	69	224
Gemma 4 31B IT	100.0%	9.8s	69	220
MiniMax M2.7	100.0%	2.1s	90	251