Which is better, Claude Opus 4.5 or Claude Opus 4.7?

Across 51 shared benchmarks tracked on Vector Wire, Claude Opus 4.5 leads on 7 and Claude Opus 4.7 leads on 44 — Claude Opus 4.7 leads on more. Strengths differ by axis; the table below shows every head-to-head number with provenance.

SEEDRefresh Models —Deals —Regulatory —Sources —

Claude Opus 4.5 vs Claude Opus 4.7

AnthropicvsAnthropic51 shared benchmarks7–44 head-to-head

Benchmark	Claude Opus 4.5	Claude Opus 4.7
AA Agentic Index	59.6	64.6
AA Intelligence	41.9	55
AA-LCR	76	75.3
AA-Omniscience	14	27.3
aime_2026	95.1	95.8
arc_agi_1	82	92
ARC-AGI-2	37.6	75.8
arena_elo	1473	1494
arena_text_factuality	1458	1474
Artificial Analysis Coding Index	47.8	73.6
browsecomp	37	79.8
charxiv_rq	68.5	82.1
coding_arena_elo	1495	1557
critpt	4.6	12
cybergym	50.6	73.8
finance_agent	55.2	71.5
frontiermath_tier_4	4.2	22.9
gdpval	47.3	58.6
GPQA Diamond	87	94.2
HLE	30.8	54.7
HLE (with tools)	43.4	54.7
hmmt_feb_2026	85.3	93.9
IFBench	58	58.6
livebench	76	76.9
livebench_agentic_coding	39.7	50.7
livebench_coding	79.7	82.1
livebench_data_analysis	74.4	78.3
livebench_instruction_following	62.5	66.7
livebench_language	81.3	77.9
livebench_math	90.4	92.8
livebench_reasoning	80.1	87.2
MCP Atlas	69.8	79.1
mmmlu	90.8	91.5
MMMU-Pro	74	78.8
OmniScience Accuracy	46.6	48.9
OmniScience Non-Hallucination	39	57.7
OSWorld-Verified	66.3	82.8
scicode	50	54.5
simplebench	62	61.7
simpleqa_verified	41.8	50.6
SWE-bench Multilingual	77.5	80.5
SWE-bench Pro	57.1	64.3
SWE-bench Verified	81.5	87.6
Terminal-Bench 2.0	59.3	69.4
Terminal-Bench Hard	47	54.5
toolathlon	43.5	59.3
vectara_answer_rate	98.7	98
vectara_avg_summary_length	114.5	149.1
vectara_factual_consistency	89.1	88
vectara_hallucination_rate ↓	10.9	12
τ²-Bench Telecom (AA run)	89.5	88.6

Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing.