Long documents
Prompts that approach the documented context limit
GLM-5.3-Flash
GLM-5.3-Flash has the larger documented context window.
Confidence: documented
GLM-5.3-Flash vs Kimi K2.5 (Reasoning)
Updated October 10, 2026. Rank says GLM-5.3-Flash is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.
Both of these models will change. Get the price, version and retirement notices for the pair, each with its source. Follow model changes
Share or export
Decision reading
GLM-5.3-Flash has the higher public point estimate, 57.36 versus 56.39. Their conditional score ranges overlap. These ranges do not establish rank confidence. 1 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
Model B
Moonshot AI
56.39/100
Estimated · Public rank #59
Conditional range 42.0–70.7
- Shared results
- 1
- GLM-5.3-Flash only
- 20
- Kimi K2.5 (Reasoning) only
- 14
- Like-for-like categories
- 0 / 8
Estimated: GLM-5.3-Flash and 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.
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: limitedAgentic work
Tool use, computer use, and multi-step task completion
Not enough matched evidence
Kimi K2.5 (Reasoning) is scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.
Confidence: limitedChat turn cost
1K fresh input + 500 output tokens
Not enough matched evidence
A complete comparable API-rate estimate is not available for both models.
Confidence: listed-ratesCache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
Not enough matched evidence
A complete comparable API-rate estimate is not available for both models.
Confidence: rate-fallbackRepository review cost
50K fresh input + 3K output tokens
Not enough matched evidence
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.
49.3GLM-5.3-Flash—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.
20 GLM-5.3-Flash only
1 Shared
14 Kimi K2.5 (Reasoning) only
3 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.
Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.
CharXivMultimodal
Normalized gap 11.9GLM-5.3-Flash:89.4%Kimi K2.5 (Reasoning):77.5%
Bars run 0–100 on each benchmark’s normalized display scale
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.
Agentic
Directional only- GLM-5.3-Flash
- 55.7
- Supported · #34/123
- Kimi K2.5 (Reasoning)
- 38.2
- Estimated · #67/123
- Basis
- BenchAlign v5.8 lane · 6 vs 4 public rows
- Reading
- Directional only
Multimodal
Directional only- GLM-5.3-Flash
- 84.0
- #14/54
- Kimi K2.5 (Reasoning)
- 69.0
- #33/54
- Basis
- Provisional lane · 2 vs 2 weighted rows
- Reading
- Directional only
Knowledge
Directional only- GLM-5.3-Flash
- 60.5
- Supported · #43/177
- Kimi K2.5 (Reasoning)
- 49.3
- Estimated · #80/177
- Basis
- BenchAlign v5.8 lane · 2 vs 2 public rows
- Reading
- Directional only
Coding
Not comparable- GLM-5.3-Flash
- 49.3
- Supported · #42/146
- Kimi K2.5 (Reasoning)
- Not ranked
- Basis
- BenchAlign v5.8 lane · 8 vs 4 public rows
- Reading
- Not comparable
Reasoning
Not comparable- GLM-5.3-Flash
- 81.1
- #11/28
- Kimi K2.5 (Reasoning)
- 67.1
- Unranked · 1 rankable row
- Basis
- Provisional lane · 0 vs 1 weighted rows
- Reading
- Not comparable
Multilingual
Not comparable- GLM-5.3-Flash
- Not ranked
- Kimi K2.5 (Reasoning)
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Instruction following
Not comparable- GLM-5.3-Flash
- Not ranked
- Kimi K2.5 (Reasoning)
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Math
Not comparable- GLM-5.3-Flash
- Not ranked
- Kimi K2.5 (Reasoning)
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
| Category | GLM-5.3-Flash | Kimi K2.5 (Reasoning) | Basis | Reading |
|---|---|---|---|---|
| Agentic | 55.7Supported · #34/123 | 38.2Estimated · #67/123 | Directional onlyBenchAlign v5.8 lane · 6 vs 4 public rows | Directional only |
| Multimodal | 84.0#14/54 | 69.0#33/54 | Directional onlyProvisional lane · 2 vs 2 weighted rows | Directional only |
| Knowledge | 60.5Supported · #43/177 | 49.3Estimated · #80/177 | Directional onlyBenchAlign v5.8 lane · 2 vs 2 public rows | Directional only |
| Coding | 49.3Supported · #42/146 | Not ranked | Not comparableBenchAlign v5.8 lane · 8 vs 4 public rows | Not comparable |
| Reasoning | 81.1#11/28 | 67.1Unranked · 1 rankable row | Not comparableProvisional lane · 0 vs 1 weighted rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Instruction following | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Math | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | 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.
Supported evidence per lane · 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
- GLM-5.3-Flash
- Self-hosted; infrastructure cost varies
- Fits in one request
- Kimi K2.5 (Reasoning)
- $0.0021
- Fits in one request
GLM-5.3-Flash has no comparable published API token rate.
Repository review
50K fresh input + 3K output tokens
- GLM-5.3-Flash
- Self-hosted; infrastructure cost varies
- Fits in one request
- Kimi K2.5 (Reasoning)
- $0.039
- Fits in one request
GLM-5.3-Flash has no comparable published API token rate.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- GLM-5.3-Flash
- Self-hosted; infrastructure cost varies
- Fits in one request
- Cached-input rate unavailable
- Kimi K2.5 (Reasoning)
- $0.162
- Fits in one request
- Cached input priced at the published list-input rate
Kimi K2.5 (Reasoning) has no published cached-input rate, so cached tokens use its listed input rate. GLM-5.3-Flash has no comparable published API token 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.
SpecificationGLM-5.3-FlashKimi K2.5 (Reasoning)
Context window
Maximum documented context; output-token limits may be lower.
GLM-5.3-Flash
Kimi K2.5 (Reasoning)
256K
API model ID
GLM-5.3-Flash
glm-5.3-flash
GLM-5.3-Flash model cardKimi 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.
GLM-5.3-Flash
No comparable hosted API rate
GLM-5.3-Flash model cardKimi K2.5 (Reasoning)
Not published
Documented inputs
GLM-5.3-Flash
Not sourced
Kimi K2.5 (Reasoning)
Not sourced
Documented outputs
GLM-5.3-Flash
Not sourced
Kimi K2.5 (Reasoning)
Not sourced
Provider availability
GLM-5.3-Flash
Not sourced
Kimi K2.5 (Reasoning)
Not sourced
Reasoning profile
GLM-5.3-Flash
Reasoning
Kimi K2.5 (Reasoning)
Reasoning
Weight access
GLM-5.3-Flash
Open Weight
Kimi K2.5 (Reasoning)
Proprietary
License
GLM-5.3-Flash
Open Weight
Kimi K2.5 (Reasoning)
Proprietary
Release date
GLM-5.3-Flash
2026-08-26
Kimi K2.5 (Reasoning)
2026-02-01
If you already use one of these models
- Deployment change
- The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
- Quality signal
- GLM-5.3-Flash has the higher public point estimate, 57.36 versus 56.39. Their conditional score ranges overlap. These ranges do not establish rank confidence.
- Workload cost
- A complete comparable API-rate estimate is not available for both models.
- Context tradeoff
- GLM-5.3-Flash has the larger documented window (1M).
Run the same representative tasks against both endpoints before changing production traffic.
Questions
Which is better, GLM-5.3-Flash or Kimi K2.5 (Reasoning)?
GLM-5.3-Flash has the higher public point estimate, 57.36 versus 56.39. 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, GLM-5.3-Flash 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, GLM-5.3-Flash or Kimi K2.5 (Reasoning)?
GLM-5.3-Flash scores higher for agentic tasks on the public lane, 55.7 to 38.2. Kimi K2.5 (Reasoning) is 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, GLM-5.3-Flash or Kimi K2.5 (Reasoning)?
Both models do not have comparable published API token rates, so this page does not name a universal price winner.
Which has the larger context window, GLM-5.3-Flash or Kimi K2.5 (Reasoning)?
GLM-5.3-Flash has the larger documented context window: 1M, compared with 256K.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Browse raw public benchmark evidence35 rows
Agentic
Terminal-Bench 2.1
GLM-5.3-Flash84.3%SourceKimi K2.5 (Reasoning)—Not directly comparable
Toolathlon-Verified
GLM-5.3-Flash78.4%SourceKimi K2.5 (Reasoning)—Not directly comparable
AutomationBench
GLM-5.3-Flash48.8%SourceKimi K2.5 (Reasoning)—Not directly comparable
Agents' Last Exam
GLM-5.3-Flash26.3%SourceKimi K2.5 (Reasoning)—Not directly comparable
HLE w/ tools
GLM-5.3-Flash55.3%SourceKimi K2.5 (Reasoning)—Not directly comparable
Terminal-Bench 2.1 (Vals)
GLM-5.3-Flash62.9%SourceKimi K2.5 (Reasoning)—Not directly comparable
Terminal-Bench 2.0
GLM-5.3-Flash—Kimi K2.5 (Reasoning)50.8%SourceNot directly comparable
BrowseComp
GLM-5.3-Flash—Kimi K2.5 (Reasoning)60.6%SourceNot directly comparable
OSWorld-Verified
GLM-5.3-Flash—Kimi K2.5 (Reasoning)63.3%SourceNot directly comparable
Gert Labs
GLM-5.3-Flash—Kimi K2.5 (Reasoning)32.58%SourceNot directly comparable
Coding
Terminal-Bench 2.1
GLM-5.3-Flash84.3%SourceKimi K2.5 (Reasoning)—Not directly comparable
DeepSWE
GLM-5.3-Flash63.4%SourceKimi K2.5 (Reasoning)—Not directly comparable
NL2Repo
GLM-5.3-Flash56.3%SourceKimi K2.5 (Reasoning)—Not directly comparable
LiveCodeBench (Vals)
GLM-5.3-Flash80.5%SourceKimi K2.5 (Reasoning)—Not directly comparable
SWE-bench (Vals)
GLM-5.3-Flash92.0%SourceKimi K2.5 (Reasoning)—Not directly comparable
OpenHarmony Bench
GLM-5.3-Flash57.3%SourceKimi K2.5 (Reasoning)—Not directly comparable
FrontierSWE v2
GLM-5.3-Flash18.1%SourceKimi K2.5 (Reasoning)—Not directly comparable
Bug Hunt Bench
GLM-5.3-Flash17.7 fixesSourceKimi K2.5 (Reasoning)—Not directly comparable
SWE-bench Verified
GLM-5.3-Flash—Kimi K2.5 (Reasoning)76.8%SourceNot directly comparable
LiveCodeBench v6
GLM-5.3-Flash—Kimi K2.5 (Reasoning)85.0%SourceNot directly comparable
Terminal-Bench 2.0
GLM-5.3-Flash—Kimi K2.5 (Reasoning)50.8%SourceNot directly comparable
Vibe Code Bench
GLM-5.3-Flash—Kimi K2.5 (Reasoning)17.54%SourceNot directly comparable
Reasoning
LongBench v2
GLM-5.3-Flash—Kimi K2.5 (Reasoning)61%SourceNot directly comparable
Multimodal
OfficeQA Pro
GLM-5.3-Flash62.4%SourceKimi K2.5 (Reasoning)—Not directly comparable
CharXiv
GLM-5.3-Flash89.4%SourceKimi K2.5 (Reasoning)77.5%SourceGLM-5.3-Flash leads this result
Chartography (tools)
GLM-5.3-Flash78.0%SourceKimi K2.5 (Reasoning)—Not directly comparable
BabyVision
GLM-5.3-Flash53.4%SourceKimi K2.5 (Reasoning)—Not directly comparable
MMVU
GLM-5.3-Flash80.5%SourceKimi K2.5 (Reasoning)—Not directly comparable
MMMU-Pro
GLM-5.3-Flash—Kimi K2.5 (Reasoning)78.5%SourceNot directly comparable
Knowledge
GPQA Diamond (Vals)
GLM-5.3-Flash86.4%SourceKimi K2.5 (Reasoning)—Not directly comparable
MMLU-Pro (Vals)
GLM-5.3-Flash86.1%SourceKimi K2.5 (Reasoning)—Not directly comparable
GPQA
GLM-5.3-Flash—Kimi K2.5 (Reasoning)87.6%SourceNot directly comparable
MMLU-Pro
GLM-5.3-Flash—Kimi K2.5 (Reasoning)87.1%SourceNot directly comparable
Math
35 public results · 1 shared
Watch GLM-5.3-Flash vs Kimi K2.5 (Reasoning)
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Last updated October 10, 2026