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Composer 1

Foundation model

Composer 1

Release date: 2025-10-29Updated: 2026-03-22Views: 827
Live demoGitHubHugging FaceCompare
Parameters
No data
Context length
200K
Multilingual
No data
Reasoning ability
2/5

Composer 1 is an AI model published by Cursor, released on 2025-10-29, for Foundation model, and 200K context length, with a 56.90 score on SWE-bench Multilingual.

Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology

Composer 1

Model basics

Reasoning traces
No data
Thinking modes
Thinking Mode (Default)Standard Mode
Context length
200K tokens
Max output length
4K tokens
Model type
Foundation model
Modality (in / out)
No data
Release date
2025-10-29
Model file size
No data
MoE architecture
No
Total params / Active params
No data / Not applicable
Knowledge cutoff
No data
Composer 1

Open source & experience

Code license
Proprietary
Weights license
Proprietary
GitHub repo
N/A
Hugging Face
N/A
Live demo
N/A
Composer 1

Official resources

Paper
DataLearnerAI blog
N/A
Composer 1

API details

API speed
4/5
💡Default unit: $/1M tokens. If vendors use other units, follow their published pricing.
Standard
TypeConditionInputOutput
Text-$1.25/ 1M tokens$10.00/ 1M tokens
Cache PricingPrompt Cache
TypeTTLWriteRead
Text-$0.125/ 1M tokens

“—” means the modality is not billed in that direction, or the vendor has not published a price for it.

Composer 1

Benchmark Results

Composer 1 currently shows benchmark results led by Terminal Bench 2.0 (46 / 48, score 40), SWE-bench Multilingual (29 / 30, score 56.90). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.

Thinking

AI Agent - Tool Usage

1 evaluations
Benchmark / mode
Score
Rank/total
Terminal Bench 2.0
Thinking Mode
40
46 / 48

Coding and Software Engineer

1 evaluations
Benchmark / mode
Score
Rank/total
56.90
29 / 30
Composer 1

Publisher

Composer 1

Model Overview

Composer 1 is an AI model published by Cursor, released on 2025-10-29, for Foundation model, and 200K context length, with a 56.90 score on SWE-bench Multilingual.

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