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Composer 2 Fast

CursorCurrentReleased Mar 19, 2026
Overall Score
Unranked
Arena Elo
N/A
Categories Ranked
0of 8
Price (1M tokens)
N/A
Speed
N/A
Context
200K
ProprietaryReasoning
Confidence
fast

BenchLM is tracking Composer 2 Fast, 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 Fast 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 Fast sits inside the Composer family alongside Composer 2. This profile currently has 1 of 178 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 0 benchmark categories — sorted by best rank

No ranking data available

Category Performance

Scores across all benchmark categories (0-100 scale)

Category Breakdown

Agentic

0.0/ 100
Weight: 22%0 benchmarks
Terminal-Bench 2.0BrowseCompOSWorld-VerifiedGAIATAU-benchWebArena

Coding

0.0/ 100
Weight: 20%1 benchmark
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

Fast

Canonical Entry

Composer 2

Frequently Asked Questions

How does Composer 2 Fast perform overall in AI benchmarks?

Composer 2 Fast has 1 published benchmark scores on BenchLM, but it does not yet have enough non-generated coverage to receive a global overall rank.

Is Composer 2 Fast good for coding and programming?

Composer 2 Fast has visible benchmark coverage in coding and programming, but BenchLM does not currently assign it a global category rank there.

Which sibling models are related to Composer 2 Fast?

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

Does Composer 2 Fast have full benchmark coverage on BenchLM?

Not yet. Composer 2 Fast currently has 1 published benchmark scores out of the 178 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 Fast?

Composer 2 Fast has a context window of 200K, which determines how much text it can process in a single interaction.

Last updated: April 29, 2026 · Runtime metrics stay blank until BenchLM has a sourced snapshot.

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