Legal Research Bench · Open Analysis

#	Model	Effort	Score	Cost / task	Harness
1	Muse Spark 1.3	max	55.3%	$0.589	–
2	Opus 5	max	55.3%	$6.76	–
3	Fable 5.1	max	55.3%	$23.06	–
4	Gemini 4	high	54.8%	$6.45	–
5	Wonder Full	max	53.4%	$3.60	–
6	Wonder	max	50.5%	$3.98	–
7	Opus 5.5	max	50.5%	$25.16	–
8	Fable 5	max	49.5%	$9.79	–
9	GLM 5.3	max	49.0%	$2.24	–
10	Grok 4.6	high	48.1%	$1.53	–
11	GPT-5.6 Sol	max	48.1%	$21.61	–
12	Sonnet 5.5	max	48.1%	$14.83	–
13	Qwen 3.8 Max	max	47.6%	$2.49	–
14	Grok 4.7	xhigh	47.1%	$4.92	–
15	MiMo V2.6 Pro	high	47.1%	$0.181	–
16	Kimi K3	max	46.2%	$3.47	–
17	GLM 5.3 Flash	max	45.2%	$0.120	–
18	Hy4	–	45.2%	$0.846	–
19	Ember-1	–	44.7%	$3.67	–
20	Muse Spark 1.2	xhigh	43.8%	$0.508	–
21	Opus 4.8	max	43.8%	$2.82	–
22	Haiku 5.5	max	43.3%	$1.63	–
23	Sonnet 5	max	41.8%	$2.72	–
24	GLM Legal	max	41.8%	$0.049	–
25	DeepSeek V4.1 Flash	max	41.3%	$0.248	–
26	GPT-5.6 Terra	max	41.3%	$7.91	–
27	DeepSeek V4 Pro 0813	max	40.9%	$1.09	–
28	Step 5 Preview	–	40.4%	$0.839	–
29	GPT-5.5	xhigh	40.4%	$7.40	–
30	GPT-6 Astra	max	39.4%	$10.58	–
31	Gemini 3.8 Flash	high	38.9%	$1.63	–
32	Opus 4.7	max	38.5%	$3.06	–
33	Sonnet 4.6	max	38.5%	$2.30	–
34	GPT-6.1 Sol	max	38.5%	$3.38	–
35	Muse Spark 1.1	xhigh	38.0%	$0.377	–
36	MiMo V2.6 Flash	high	38.0%	$0.070	–
37	Grok 4.5	high	38.0%	$1.09	–
38	GPT-5.6 Luna	max	36.5%	$0.845	–
39	Qwen 3.8 27B	xhigh	36.1%	$2.16	–
40	Gemini 3.7 Flash	high	34.6%	$0.760	–
41	Mistral Large 4	high	31.7%	$5.33	–
42	GLM 5.2	max	31.3%	$0.889	–
43	Gemini 3.5 Flash	high	30.8%	$1.31	–
44	DeepSeek V4 Flash 0731	high	30.3%	$0.275	–
45	GPT-6 Luna	max	30.3%	$0.440	–
46	MiniMax M3	max	29.8%	$0.343	–
47	GPT-6 Sol	max	28.8%	$4.90	–
48	Inkling	max	28.4%	$0.494	–
49	GLM 5.1	max	27.9%	$0.386	–
50	Inkling Small	xhigh	25.5%	$0.142	–
51	Qwen 3.7 Max	max	25.5%	$1.40	–
52	Gemini 3.6 Flash	high	25.0%	$0.467	–
53	DeepSeek V4	max	23.1%	$0.682	–
54	Gemini 3.1 Pro	high	20.7%	$1.10	–
55	Gemini 3 Flash	high	18.3%	$0.135	–
56	Qwen 3.7 Plus	high	16.3%	$0.296	–
57	MiMo V2.5 Pro	xhigh	15.9%	$0.083	–
58	Kimi K2.5	max	15.9%	$0.230	–
59	Kimi K2.6	max	15.9%	$1.52	–
60	Grok 4.3	high	15.4%	$0.203	–
61	Ling 3.0 Flash Fin	–	15.4%	$0.028	–
62	Nemotron 3 Ultra 550B A55B	max	15.4%	–	–
63	Qwen 3.6 Plus	max	14.9%	$0.698	–
64	Gemini 3.5 Flash-Lite	high	13.9%	$0.125	–
65	Grok 4.20	xhigh	13.9%	$0.261	–
66	GPT-5.4 Mini	xhigh	12.5%	$1.86	–
67	Haiku 4.5	xhigh	10.6%	$0.269	–
68	MiniMax M2.7	high	10.6%	$0.219	–
69	MiMo V2.5	xhigh	9.1%	$0.033	–
70	Mistral Medium 3.5	high	9.1%	$1.31	–
71	GPT-5.4 Nano	high	6.3%	$0.141	–
72	Mercury 2.5	high	4.3%	$0.058	–
73	Gemini 3.1 Flash-Lite	high	3.4%	$0.014	–
74	Nemotron 3.5 Lightning	–	2.9%	$0.0044	–
75	Laguna M.1	–	2.4%	$0.220	–
76	Laguna XS.2	–	1.0%	$0.108	–
77	Ling 3.0 Flash	–	0.0%	$0.036	–