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Kimi K2.5 vs Kimi K2.5 (Reasoning)

Updated October 20, 2026. Rank says Kimi K2.5 (Reasoning) is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty. This is a same-family comparison, so migration details appear when the source data supports them.

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Decision reading

Kimi K2.5 (Reasoning) has the higher public point estimate, 56.18 versus 53.03. Their conditional score ranges overlap. These ranges do not establish rank confidence. 14 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

Model A
Moonshot AI logo

Moonshot AI

53.03/100

Supported · Public rank #82

90% interval 44.4–61.6

Model B
Moonshot AI logo

Moonshot AI

56.18/100

Estimated · Public rank #64

Conditional range 41.8–70.5

Shared results
14
Kimi K2.5 only
54
Kimi K2.5 (Reasoning) only
1
Like-for-like categories
1 / 8
Supported: Kimi K2.5 · Estimated: Kimi K2.5 (Reasoning). Conditional ranges do not establish rank confidence.How the comparison works

Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

No workload recommendation clears the current evidence threshold.

Use the matched evidence, workload costs, and sourced specifications below instead of treating a point score as a universal answer.

Show secondary and unsupported calls
  • Coding work

    Code generation, repair, and software-engineering tasks

    Not enough matched evidence

    Kimi K2.5 (Reasoning) is not ranked on the public lane for coding, so no winner is named for coding.

    Confidence: limited
  • Agentic work

    Tool use, computer use, and multi-step task completion

    Not enough matched evidence

    Kimi K2.5 and Kimi K2.5 (Reasoning) are scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.

    Confidence: limited
  • Long documents

    Prompts that approach the documented context limit

    No clear pick

    The documented context windows are equal.

    Confidence: documented
  • Chat turn cost

    1K fresh input + 500 output tokens

    No clear pick

    A complete comparable API-rate estimate is not available for both models.

    Confidence: listed-rates
  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    No clear pick

    A complete comparable API-rate estimate is not available for both models.

    Confidence: rate-fallback
  • Repository review cost

    50K fresh input + 3K output tokens

    No clear pick

    A complete comparable API-rate estimate is not available for both models.

    Confidence: listed-rates

Which one for a specific job

Choose a job from the LLM Selector's task catalog to see the category row it rests on, under the same basis rules as the table below. A directional row stays directional; choosing a job never creates a winner.

The same task catalog as the LLM Selector. Each job names the evidence surface it rests on; nothing here adds a new score.

38.5Kimi K2.5—Kimi K2.5 (Reasoning)

Not comparable · BenchAlign v5.8

The coding row is not comparable on the public lane: at least one model is not measured or not ranked there.

Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.

Same basis rules as the category table below

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

2 categories rest on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

A shared-evidence shape is not available.

BenchLM does not draw a radar or infer missing axes when the matched evidence is too sparse.

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign v5.8 lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.

Multimodal

Like-for-like
Kimi K2.5
70.4
#33/55
Kimi K2.5 (Reasoning)
69.0
#34/55
Basis
Provisional lane · 2 vs 2 weighted rows
Reading
Kimi K2.5 leads

Agentic

Directional only
Kimi K2.5
40.9
Estimated · #67/131
Kimi K2.5 (Reasoning)
38.8
Estimated · #71/131
Basis
BenchAlign v5.8 lane · 16 vs 4 public rows
Reading
Directional only

Knowledge

Directional only
Kimi K2.5
51.4
Estimated · #78/187
Kimi K2.5 (Reasoning)
48.9
Estimated · #87/187
Basis
BenchAlign v5.8 lane · 8 vs 2 public rows
Reading
Directional only

Coding

Not comparable
Kimi K2.5
38.5
Estimated · #69/152
Kimi K2.5 (Reasoning)
Not ranked
Basis
BenchAlign v5.8 lane · 10 vs 4 public rows
Reading
Not comparable

Reasoning

Not comparable
Kimi K2.5
71.3
Unranked · 3 rankable rows
Kimi K2.5 (Reasoning)
66.3
Unranked · 1 rankable row
Basis
Provisional lane · 1 vs 1 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Kimi K2.5
87.3
#8/17
Kimi K2.5 (Reasoning)
Not ranked
Basis
Provisional lane · 1 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Kimi K2.5
85.8
#48/149
Kimi K2.5 (Reasoning)
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Kimi K2.5
83.3
Unranked · 7 rankable rows
Kimi K2.5 (Reasoning)
Not ranked
Basis
Provisional lane · 2 vs 0 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign v5.8) differ from the provisional-lane categories. Unranked scores sit on the provisional lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Bars run 0–100Methodology

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

Kimi K2.5
$0.0021
Fits in one request
Kimi K2.5 (Reasoning)
$0.0021
Fits in one request

Modeled costs are equal

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Kimi K2.5
$0.039
Fits in one request
Kimi K2.5 (Reasoning)
$0.039
Fits in one request

Modeled costs are equal

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

Kimi K2.5
$0.162
Fits in one request
Cached input priced at the published list-input rate
Kimi K2.5 (Reasoning)
$0.162
Fits in one request
Cached input priced at the published list-input rate

Modeled costs are equal

Kimi K2.5 has no published cached-input rate, so cached tokens use its listed input rate. Kimi K2.5 (Reasoning) has no published cached-input rate, so cached tokens use its listed input rate.

Cached input falls back to the list input rate only where a cached rate is unpublished

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Context window

Maximum documented context; output-token limits may be lower.

Kimi K2.5

256K

Kimi K2.5 (Reasoning)

256K

API model ID

Kimi K2.5

Not sourced

Kimi K2.5 (Reasoning)

Not sourced

Cached-input rate

A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.

Kimi K2.5

Not published

Kimi K2.5 (Reasoning)

Not published

Documented inputs

Kimi K2.5

Not sourced

Kimi K2.5 (Reasoning)

Not sourced

Documented outputs

Kimi K2.5

Not sourced

Kimi K2.5 (Reasoning)

Not sourced

Provider availability

Kimi K2.5

Not sourced

Kimi K2.5 (Reasoning)

Not sourced

Reasoning profile

Kimi K2.5

Non-Reasoning

Kimi K2.5 (Reasoning)

Reasoning

Weight access

Kimi K2.5

Open Weight

Kimi K2.5 (Reasoning)

Proprietary

License

Kimi K2.5

Open Weight

Kimi K2.5 (Reasoning)

Proprietary

Release date

Kimi K2.5

2026-01-27

Kimi K2.5 (Reasoning)

2026-01-27

If you are choosing between sibling variants

Deployment change
Both entries list Moonshot AI as the provider. Confirm endpoint, model ID, limits, and feature support before switching.
Quality signal
Kimi K2.5 (Reasoning) has the higher public point estimate, 56.18 versus 53.03. Their conditional score ranges overlap. These ranges do not establish rank confidence.
Workload cost
Repository review: $0.039 vs $0.039. Cache-heavy agent loop: $0.162 vs $0.162.
Context tradeoff
Both models list 256K.
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, Kimi K2.5 or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) has the higher public point estimate, 56.18 versus 53.03. Their conditional score ranges overlap. These ranges do not establish rank confidence. The page therefore keeps the decision tied to the specific documented workload.

Which is better for coding, Kimi K2.5 or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) is not ranked on the public lane for coding, so no winner is named for coding.

Which is better for agentic tasks, Kimi K2.5 or Kimi K2.5 (Reasoning)?

Kimi K2.5 scores higher for agentic tasks on the public lane, 40.9 to 38.8. Kimi K2.5 and Kimi K2.5 (Reasoning) are scored on Estimated evidence for agentic tasks, so the reading is directional rather than like-for-like. BenchLM does not name a winner for agentic tasks from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which costs less, Kimi K2.5 or Kimi K2.5 (Reasoning)?

For the stated presets, chat costs $0.0021 on Kimi K2.5 and $0.0021 on Kimi K2.5 (Reasoning); repository review costs $0.039 and $0.039; the cache-heavy agent loop costs $0.162 and $0.162. Kimi K2.5 has no published cached-input rate, so cached tokens use its listed input rate. Kimi K2.5 (Reasoning) has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, Kimi K2.5 or Kimi K2.5 (Reasoning)?

Both models list the same context window, 256K.

Self-host vs API cost

Estimates at 50,000 req/day · 1000 tokens/req average.

Kimi K2.5
API / mo$2,700
Self-host / mo$7,358
Break-even186M/day
Kimi K2.5 (Reasoning)
API / mo$2,700
Self-host / moNot listed
Break-even—
Proprietary model — self-hosting not applicable.
Model the full break-even

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence69 rows

Agentic

  • Terminal-Bench 2.0

    Kimi K2.550.8%
    Source
    Kimi K2.5 (Reasoning)50.8%
    Source

    Tie

  • BrowseComp

    Shared source
    Kimi K2.560.6%
    Kimi K2.5 (Reasoning)60.6%

    Tie

  • OSWorld-Verified

    Kimi K2.563.3%
    Source
    Kimi K2.5 (Reasoning)63.3%
    Source

    Tie

  • Claw-Eval

    Kimi K2.552.3%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • QwenClawBench

    Kimi K2.554.3%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • τ³-bench results

    Kimi K2.565.7%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • DeepSearchQA

    Kimi K2.577.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • DeepPlanning

    Kimi K2.514.4%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Toolathlon

    Kimi K2.527.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MCP Atlas

    Kimi K2.529.5%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MCP-Tasks

    Kimi K2.559.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • WideResearch

    Kimi K2.572.7%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • BFCL v4

    Kimi K2.568.3%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Kimi K2.545.88%
    Kimi K2.5 (Reasoning)32.58%

    Kimi K2.5 leads this result

  • ResearchClawBench

    Kimi K2.514.0%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • JobBench

    Kimi K2.58.7%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

Coding

  • SWE-bench Verified

    Kimi K2.576.8%
    Source
    Kimi K2.5 (Reasoning)76.8%
    Source

    Tie

  • SWE-bench Verified*

    Kimi K2.570.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • LiveCodeBench v6

    Shared source
    Kimi K2.585.0%
    Kimi K2.5 (Reasoning)85.0%

    Tie

  • SWE-bench Pro

    Kimi K2.550.7%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • SWE Multilingual

    Kimi K2.573%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • SWE-Rebench

    Kimi K2.558.5%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • React Native Evals

    Kimi K2.577.2%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • NL2Repo

    Kimi K2.532%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • SciCode

    Kimi K2.548.7%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Terminal-Bench 2.0

    Kimi K2.550.8%
    Source
    Kimi K2.5 (Reasoning)50.8%
    Source

    Tie

  • Vibe Code Bench

    Kimi K2.5—
    Kimi K2.5 (Reasoning)17.54%
    Source

    Not directly comparable

Reasoning

Multimodal

  • MMMU

    Kimi K2.584.3%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Kimi K2.578.5%
    Kimi K2.5 (Reasoning)78.5%

    Tie

  • RealWorldQA

    Kimi K2.581.0%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • OmniDocBench 1.5

    Kimi K2.588.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Video-MME

    Kimi K2.587.4%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Video-MME (with subtitle)

    Kimi K2.587.4%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Video-MME (w/o subtitle)

    Kimi K2.583.2%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MathVision

    Kimi K2.584.2%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • We-Math

    Kimi K2.584.7%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • DynaMath

    Kimi K2.584.4%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • SimpleVQA

    Kimi K2.571.2%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MMLongBench-Doc

    Kimi K2.558.5%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • CC-OCR

    Kimi K2.579.7%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • AI2D_TEST

    Kimi K2.590.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • CountBench

    Kimi K2.594.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • RefCOCO (avg)

    Kimi K2.587.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MMVU

    Kimi K2.580.4%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • VideoMMMU

    Kimi K2.586.6%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MLVU (M-Avg)

    Kimi K2.585.0%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Kimi K2.577.5%
    Kimi K2.5 (Reasoning)77.5%

    Tie

Knowledge

  • Kimi K2.587.6%
    Kimi K2.5 (Reasoning)87.6%

    Tie

  • GPQA-D

    Kimi K2.587.6%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • SuperGPQA

    Kimi K2.569.2%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • Kimi K2.587.1%
    Kimi K2.5 (Reasoning)87.1%

    Tie

  • MMLU-Pro (Arcee)

    Kimi K2.587.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MMLU-Redux

    Kimi K2.594.5%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • C-Eval

    Kimi K2.594%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • HLE

    Kimi K2.530.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

Multilingual

  • MMLU-ProX

    Kimi K2.582.3%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • NOVA-63

    Kimi K2.556.0%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • INCLUDE

    Kimi K2.583.3%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • PolyMath

    Kimi K2.543.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MAXIFE

    Kimi K2.572.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

Instruction following

  • IFEval

    Kimi K2.593.9%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

Math

  • Kimi K2.596.1%
    Kimi K2.5 (Reasoning)96.1%

    Tie

  • AIME26

    Kimi K2.595.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • AIME25 (Arcee)

    Kimi K2.596.3%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • HMMT Feb 2025

    Shared source
    Kimi K2.595.4%
    Kimi K2.5 (Reasoning)95.4%

    Tie

  • HMMT Nov 2025

    Kimi K2.591.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • HMMT Feb 2026

    Kimi K2.587.1%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

  • MMAnswerBench

    Kimi K2.581.8%
    Source
    Kimi K2.5 (Reasoning)—

    Not directly comparable

69 public results · 14 shared

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Last updated October 20, 2026