Composer 2.5 vs Kimi K2.5

Composer 2.5 (2026) and Kimi K2.5 (2026) compare an IDE-native agent built on Kimi K2.5 against a coding-specialized model. Composer 2.5 ships a 1m-token context window, while Kimi K2.5 ships a 256k-token context window. On CursorBench, Composer 2.5 leads by 31.3 pts. On pricing, Composer 2.5 ranges from $0.50 to $3/1M input tokens by tier; Kimi K2.5 costs $0.44/1M input tokens. This page treats the result as workflow and deployment fit, not a universal model winner.

Use Composer 2.5 when you want the packaged IDE-native agent built on Kimi K2.5 workflow; use Kimi K2.5 when you need a model you can route, wrap, or run outside that product surface.

Decision scorecard

Local evidence first

Signal	Composer 2.5	Kimi K2.5	How to read it
Product type	IDE-native agent built on Kimi K2.5	Coding-specialized model	Read downstream rows through the product-type lens before comparing benchmarks, prices, or provider availability.
Best for	Long Cursor IDE sessions and autonomous in-IDE coding	custom coding agents, code generation, and tool loops	Use-case synthesis from product type, capability flags, context, and provider data.
Decision fit	Coding, RAG, and Agents	Coding, RAG, and Agents	Primary workload tags from local decision data.
Context window	1m	256k	Higher is better when prompts, retrieval chunks, or transcripts are large.
Cheapest output	$2.50/1M tokens	$2/1M tokens	Cheapest tracked provider route; verify your exact region and tier.
Provider routes	1 tracked	10 tracked	Broader coverage can reduce vendor lock-in and fallback risk.
Shared benchmarks	CursorBench leader	4 shared	Visible benchmark lead is 31.3 points on CursorBench.

Decision tradeoffs

Choose Composer 2.5 when...

Composer 2.5 holds a shared-benchmark lead on CursorBench, ahead by 31.3 points.
Composer 2.5 has the larger context window for long prompts, retrieval packs, or transcript analysis.
Composer 2.5 uniquely exposes Code execution, IDE integration, and Parallel agents in local model data.
Local decision data tags Composer 2.5 for Coding, RAG, and Agents.

Choose Kimi K2.5 when...

Kimi K2.5 has the lower cheapest tracked output price at $2/1M tokens.
Kimi K2.5 has broader tracked provider coverage for fallback and route flexibility.
Kimi K2.5 uniquely exposes Vision, Multimodal, and Structured outputs in local model data.
Local decision data tags Kimi K2.5 for Coding, RAG, and Agents.

Monthly cost at traffic

Estimate token spend from the cheapest tracked input and output route or tier on this page.

Lower estimate Kimi K2.5

Requests / monthInput tokens / requestOutput tokens / request

Composer 2.5

$1,025

Cheapest tracked route/tier: Cursor Standard async

Kimi K2.5

$852

Cheapest tracked route/tier: OpenRouter

Estimated monthly gap: $173. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Composer 2.5 -> Kimi K2.5

No overlapping tracked provider route is sourced for Composer 2.5 and Kimi K2.5; plan for SDK, billing, or endpoint changes.
Kimi K2.5 is $0.50/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
Check replacement coverage for Code execution, IDE integration, and Parallel agents before moving production traffic.
Kimi K2.5 adds Vision, Multimodal, and Structured outputs in local capability data.

Kimi K2.5 -> Composer 2.5

No overlapping tracked provider route is sourced for Kimi K2.5 and Composer 2.5; plan for SDK, billing, or endpoint changes.
Composer 2.5 is $0.50/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
Check replacement coverage for Vision, Multimodal, and Structured outputs before moving production traffic.
Composer 2.5 adds Code execution, IDE integration, and Parallel agents in local capability data.

Specs

Specification	Composer 2.5 Cursor (Anysphere)	Kimi K2.5 Moonshot AI
Released	2026-05-18	2026-03-15
Context window	1m	256k
Parameters	—	1T (MoE, 384 experts)
Architecture	-	Mixture of Experts
License	Proprietary	Proprietary
Openness	Proprietary	Proprietary
Weights	Not released	Not released
Code	Not released	Unknown
Commercial use	Commercial use: conditional	Commercial use: conditional
Knowledge cutoff	-	-

Pricing and availability

Pricing attribute	Composer 2.5	Kimi K2.5
Input price	Standard async $0.50/1M tokens Cursor Composer 2.5 standard tier. Fast interactive $3/1M tokens Cursor says fast has the same intelligence and is the default.	$0.44/1M tokens
Output price	Standard async $2.50/1M tokens Cursor Composer 2.5 standard tier. Fast interactive $15/1M tokens Cursor says fast has the same intelligence and is the default.	$2/1M tokens
Providers	Cursor	Cloudflare Workers AI Fireworks AI OpenRouter Together AI NVIDIA NIM AWS Bedrock

Capabilities

Capability	Composer 2.5	Kimi K2.5
Vision	No	Yes
Multimodal	No	Yes
Reasoning	No	No
JSON / Tool use	Yes	Yes
Structured outputs	No	Yes
Code execution	Yes	No
IDE integration	Yes	No
Computer use	No	No
Parallel agents	Yes	No

Benchmarks

Benchmark	Composer 2.5	Kimi K2.5
CursorBench	63.2	31.9
CursorBench	56.1	31.9
SWE-rebench	79.8	58.5
Terminal-Bench 2.0	69.3	50.8

Harness caveat. Composer 2.5 is measured as IDE-native agent built on Kimi K2.5, while Kimi K2.5 is coding-specialized model. Treat shared benchmark scores as directional because IDE or product scaffolding, tool access, prompt routing, and interaction mode can change real application results.

Continue comparing

Model pages

Labs and families

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Last reviewed: 2026-06-30. Data sourced from public model cards and provider documentation.

Both models

Composer 2.5 Kimi K2.5