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Composer 2.5

CursorCurrentReleased May 18, 2026
Overall Score
Unranked
Arena Elo
N/A
Categories Ranked
0of 8
Price (1M tokens)
$0.5 in / $2.5 out
Speed
N/A
Context
200K
ProprietaryReasoning
Confidence
base

BenchLM is tracking Composer 2.5, but this profile is currently excluded from the public leaderboard because it still lacks enough non-generated benchmark coverage to rank safely. Only non-generated public benchmark rows appear below.

Composer 2.5 is a proprietary model with a 200K token context window. It uses explicit chain-of-thought reasoning, which typically improves performance on math and complex reasoning tasks at the cost of higher latency and token usage.

Composer 2.5 sits inside the Composer family alongside Composer 2, Composer 2 Fast. BenchLM links it directly to Composer 2 as the earlier related model in that lineage. This profile currently has 4 of 196 tracked benchmarks. BenchLM only exposes non-generated benchmark rows publicly, so missing categories stay blank until a sourced evaluation is available.

Ranking Distribution

Category rank across 1 benchmark categories — sorted by best rank

Category Performance

Scores across all benchmark categories (0-100 scale)

Category Breakdown

Agentic

81.8/ 100
Weight: 22%1 benchmark
Terminal-Bench 2.0BrowseCompOSWorld-VerifiedGAIATAU-benchWebArena

Coding

0.0/ 100
Weight: 20%3 benchmarks
SWE-bench VerifiedLiveCodeBenchSWE-bench ProSWE-RebenchSciCode

Reasoning

0.0/ 100
Weight: 17%0 benchmarks
MuSRLongBench v2MRCRv2ARC-AGI-2

Knowledge

0.0/ 100
Weight: 12%0 benchmarks
GPQASuperGPQAMMLU-ProHLEFrontierScienceSimpleQA

Math

0.0/ 100
Weight: 5%0 benchmarks
AIME 2025BRUMO 2025MATH-500FrontierMath

Multilingual

0.0/ 100
Weight: 7%0 benchmarks
MGSMMMLU-ProX

Multimodal

0.0/ 100
Weight: 12%0 benchmarks
MMMU-ProOfficeQA ProCharXivCharXiv w/o tools

Inst. Following

0.0/ 100
Weight: 5%0 benchmarks
IFEvalIFBench

Benchmark Details

Only benchmark rows with an attached exact-source record are shown here. Source-unverified manual rows and generated rows are hidden from model pages.

Composer Family

Base entry

Related Earlier Model

Composer 2

Frequently Asked Questions

How does Composer 2.5 perform overall in AI benchmarks?

Composer 2.5 has 4 published benchmark scores on BenchLM, but it does not yet have enough non-generated coverage to receive a global overall rank.

Is Composer 2.5 good for coding and programming?

Composer 2.5 has visible benchmark coverage in coding and programming, but BenchLM does not currently assign it a global category rank there.

Is Composer 2.5 good for agentic tool use and computer tasks?

Composer 2.5 has visible benchmark coverage in agentic tool use and computer tasks, but BenchLM does not currently assign it a global category rank there.

Which sibling models are related to Composer 2.5?

Composer 2.5 belongs to the Composer family. Related variants on BenchLM include Composer 2, Composer 2 Fast.

Does Composer 2.5 have full benchmark coverage on BenchLM?

Not yet. Composer 2.5 currently has 4 published benchmark scores out of the 196 benchmarks BenchLM tracks. BenchLM only exposes non-generated public benchmark rows, so missing categories stay blank until a sourced evaluation is available.

What is the context window size of Composer 2.5?

Composer 2.5 has a context window of 200K, which determines how much text it can process in a single interaction.

Last updated: May 20, 2026 · Runtime metrics stay blank until BenchLM has a sourced snapshot.

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