llmreference

Composer 2

composer-2

Researched 1d ago

Last refreshed 2026-05-19. Next refresh: weekly.

ProprietaryCodingRAGAgentsLong contextJSON / Tool use

Composer 2 is worth evaluating for coding, rag, and agents when its provider route and context window match the workload.

Decision context: Coding task fit, 1 tracked provider route, and research from 2026-05-19.

Use it for

  • Teams evaluating coding, rag, and agents
  • Workloads that can use a 200K context window
  • Buyers comparing 1 tracked provider route

Do not use it for

  • Vision or document-understanding workloads

Cheapest output

$2.50

Cursor per 1M tokens

Provider routes

1

Tracked API hosts

Quality / dollar

Unknown

No task benchmark coverage yet

Freshness

2026-05-19

Researched 1d ago

fresh

Top use-case fit

Coding

Included by capability and metadata signals in the decision map.

RAG

Included by capability and metadata signals in the decision map.

Agents

Included by capability and metadata signals in the decision map.

Provider price ladder

ProviderInput / 1MOutput / 1MRoute
Cursor$0.500$2.50

Benchmark peer barsfor Coding

No task-mapped benchmark peers are available for this model yet.

Migration checks

No linked migration route is available for this model yet.

About

Cursor's coding model released March 19, 2026. Fine-tuned from Moonshot AI's Kimi K2.5 checkpoint via continued pretraining and large-scale RL on long-horizon coding tasks. Scores 61.3 on CursorBench, 61.7 on Terminal-Bench 2.0 (vs. Claude Opus 4.6's 58.0), and 73.7 on SWE-bench Multilingual. Technical report: arxiv.org/abs/2603.24477. Available on all Cursor plans. Standard: $0.50/M input, $2.50/M output; Fast: $1.50/M input, $7.50/M output.

Composer 2 has a 200K-token context window.

Composer 2 input tokens at $0.5/1M, output at $2.5/1M.

Capabilities

Function CallingTool UseCode Execution

Rankings

Specifications

FamilyComposer
Released2026-03-19
Context200K
Specializationcode

Created by

AI-driven multi-file code generation

Buffalo, New York, United States
Founded 2022
Website

Providers(1)