Claude Sonnet 4.5 20250929.
A model-level benchmark profile for Claude Sonnet 4.5 20250929, combining Arena category ranks, suite indexes, commercial price and speed data, SWE-bench status, and lab context.
Lab
Anthropic
Proprietary
Coverage
78%
7 of 9 tracked signals
Best Arena rank
#22
Document Arena
Best suite
#32
Coding / 65
Model profile
Benchmark signal map.
This view treats missing values as coverage gaps, then puts every available score, rank, cost, and speed signal into the same visual hierarchy.
Analyst view
Claude Sonnet 4.5 20250929 is strongest on coding.
Its best composite result is rank #32 in the coding view, with a 65 coding index. The strongest raw Arena signal is Document Arena at rank #22 with 27,977 public votes.
Best current lane
Coding
#32 / 65 coding index
Strongest raw signal
Docs
#22, 1446 score
Commercial posture
$6.00
11.6s first token / 55 tok/s
Coverage gaps
Profile completeness
7 of 9 signals matched
Arena categories
3/5
Docs, Text, Code
Commercial match
Live
Claude 4.5 Sonnet (Reasoning)
SWE-bench
#12
bash-only
Raw identifier
claude-sonnet-4-5-20250929
Performance cockpit
Public benchmark scores
Arena rows show score, public rank, confidence interval, vote count, and publish date. Missing rows stay visible as coverage gaps.
Text Arena
Arena category
1452-1458 CI
WebDev Arena
Arena category
1380-1393 CI
Vision Arena
Arena category
Not listed
No confident public Arena row for this category.
Coverage gap
Search Arena
Arena category
Not listed
No confident public Arena row for this category.
Coverage gap
Document Arena
Arena category
1440-1453 CI
SWE-bench Verified
Software issue resolution
bash-only
Cost and speed
Commercial profile
Price, latency, and throughput are only shown when a confident commercial source row is matched.
Blended price
$6.00
USD / 1M tokens
Input price
$3.00
USD / 1M input tokens
Output price
$15.00
USD / 1M output tokens
Latency
11.6s
Median time to first token
Output speed
55 tok/s
Median generation speed
Matched source row
Claude 4.5 Sonnet (Reasoning)Suite position
Composite ranks by benchmark lens.
These views combine available public signals into purpose-specific indexes. A missing card means the model lacks enough source coverage for that lens.
Value
Quality, price, latency, and output speed
value index
Coding
Code Arena, SWE-bench, and output speed
coding index
Agents
Search, documents, code, and latency
agent proxy
Reasoning
Text, documents, vision, and mode signal
reasoning proxy
Long context
Document, search, and text benchmark proxy
context proxy
Lab context
Nearby Anthropic profiles.
Same-lab models make it easier to see whether this profile is a flagship, value play, specialist, or lower-coverage row.
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Coverage
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Coverage
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Claude Opus 4.7 Thinking
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Coverage
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Claude Opus 4.6 Search
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Coverage
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Claude Opus 4.7
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Best rank
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Coverage
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Claude Opus 4.6
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Best rank
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Coverage
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Claude Opus 4.8 Thinking
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Best rank
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Coverage
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Claude Opus 4.8
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Best rank
#7
Coverage
89%