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Prompts that approach the documented context limit
Kimi K3.1 Pro
Kimi K3.1 Pro has the larger documented context window.
Confidence: documented
Hy3 Preview vs Kimi K3.1 Pro
Updated October 23, 2026. We do not rank this pair: at least one has no public score. Public scores include evidence status and uncertainty.
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Decision reading
At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner. 2 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
- Shared results
- 2
- Hy3 Preview only
- 4
- Kimi K3.1 Pro only
- 40
- Like-for-like categories
- 0 / 8
Estimated: Hy3 Preview. 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 K3.1 Pro 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
Hy3 Preview and Kimi K3.1 Pro are not ranked on the public lane for agentic, so no winner is named for agentic.
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: listed-ratesRepository 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.
31.6Hy3 Preview—Kimi K3.1 Pro
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.
4 Hy3 Preview only
2 Shared
40 Kimi K3.1 Pro only
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.
GPQAKnowledge
Normalized gap 7.0Hy3 Preview:87.2%Kimi K3.1 Pro:94.2%
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
Not comparable- Hy3 Preview
- Not ranked
- Kimi K3.1 Pro
- Not ranked
- Basis
- BenchAlign v5.8 lane · 2 vs 16 public rows
- Reading
- Not comparable
Coding
Not comparable- Hy3 Preview
- 31.6
- Estimated · #92/153
- Kimi K3.1 Pro
- Not ranked
- Basis
- BenchAlign v5.8 lane · 2 vs 6 public rows
- Reading
- Not comparable
Reasoning
Not comparable- Hy3 Preview
- Not ranked
- Kimi K3.1 Pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- Hy3 Preview
- Not ranked
- Kimi K3.1 Pro
- 98.0
- #1/56
- Basis
- Provisional lane · 0 vs 3 weighted rows
- Reading
- Not comparable
Knowledge
Not comparable- Hy3 Preview
- 46.2
- Estimated · #91/187
- Kimi K3.1 Pro
- Not ranked
- Basis
- BenchAlign v5.8 lane · 2 vs 5 public rows
- Reading
- Not comparable
Multilingual
Not comparable- Hy3 Preview
- Not ranked
- Kimi K3.1 Pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Instruction following
Not comparable- Hy3 Preview
- 48.4
- #100/153
- Kimi K3.1 Pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Math
Not comparable- Hy3 Preview
- Not ranked
- Kimi K3.1 Pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
| Category | Hy3 Preview | Kimi K3.1 Pro | Basis | Reading |
|---|---|---|---|---|
| Agentic | Not ranked | Not ranked | Not comparableBenchAlign v5.8 lane · 2 vs 16 public rows | Not comparable |
| Coding | 31.6Estimated · #92/153 | Not ranked | Not comparableBenchAlign v5.8 lane · 2 vs 6 public rows | Not comparable |
| Reasoning | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Multimodal | Not ranked | 98.0#1/56 | Not comparableProvisional lane · 0 vs 3 weighted rows | Not comparable |
| Knowledge | 46.2Estimated · #91/187 | Not ranked | Not comparableBenchAlign v5.8 lane · 2 vs 5 public rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Instruction following | 48.4#100/153 | 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.
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
- Hy3 Preview
- Self-hosted; infrastructure cost varies
- Fits in one request
- Kimi K3.1 Pro
- $0.007
- Fits in one request
Hy3 Preview has no comparable published API token rate.
Repository review
50K fresh input + 3K output tokens
- Hy3 Preview
- Self-hosted; infrastructure cost varies
- Fits in one request
- Kimi K3.1 Pro
- $0.13
- Fits in one request
Hy3 Preview has no comparable published API token rate.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- Hy3 Preview
- Self-hosted; infrastructure cost varies
- Fits in one request
- Cached-input rate unavailable
- Kimi K3.1 Pro
- $0.18
- Fits in one request
Hy3 Preview 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.
SpecificationHy3 PreviewKimi K3.1 Pro
Context window
Maximum documented context; output-token limits may be lower.
Hy3 Preview
256K
Kimi K3.1 Pro
1.05M
API model ID
Hy3 Preview
Not sourced
Kimi K3.1 Pro
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Hy3 Preview
No comparable hosted API rate
Kimi K3.1 Pro
$0.2 per 1M cached input tokens
Documented inputs
Hy3 Preview
Not sourced
Kimi K3.1 Pro
Not sourced
Documented outputs
Hy3 Preview
Not sourced
Kimi K3.1 Pro
Not sourced
Provider availability
Hy3 Preview
Not sourced
Kimi K3.1 Pro
Not sourced
Reasoning profile
Hy3 Preview
Reasoning
Kimi K3.1 Pro
Reasoning
Weight access
Hy3 Preview
Open Weight
Kimi K3.1 Pro
Pending
License
Hy3 Preview
Open Weight
Kimi K3.1 Pro
Pending
Release date
Hy3 Preview
2026-04-23
Kimi K3.1 Pro
2026-10-23
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
- At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner.
- Workload cost
- A complete comparable API-rate estimate is not available for both models.
- Context tradeoff
- Kimi K3.1 Pro has the larger documented window (1.05M).
Run the same representative tasks against both endpoints before changing production traffic.
Questions
Which is better, Hy3 Preview or Kimi K3.1 Pro?
At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner. The page therefore keeps the decision tied to the specific documented workload.
Which is better for coding, Hy3 Preview or Kimi K3.1 Pro?
Kimi K3.1 Pro is not ranked on the public lane for coding, so no winner is named for coding.
Which is better for agentic tasks, Hy3 Preview or Kimi K3.1 Pro?
Hy3 Preview and Kimi K3.1 Pro are not ranked on the public lane for agentic tasks, so no winner is named for agentic tasks.
Which costs less, Hy3 Preview or Kimi K3.1 Pro?
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, Hy3 Preview or Kimi K3.1 Pro?
Kimi K3.1 Pro has the larger documented context window: 1.05M, 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 evidence46 rows
Agentic
Terminal-Bench 2.0
Hy3 Preview54.4%SourceKimi K3.1 Pro—Not directly comparable
Gert Labs
Hy3 Preview36.91%SourceKimi K3.1 Pro—Not directly comparable
Terminal-Bench 4.0
Hy3 Preview—Kimi K3.1 Pro65.70%SourceNot directly comparable
Terminal-Bench-Science 0.1
Hy3 Preview—Kimi K3.1 Pro38.1%SourceNot directly comparable
HLE w/ tools
Hy3 Preview—Kimi K3.1 Pro70.0%SourceNot directly comparable
BrowseComp
Hy3 Preview—Kimi K3.1 Pro92.1%SourceNot directly comparable
BioMysteryBench
Hy3 Preview—Kimi K3.1 Pro80.6%SourceNot directly comparable
Agents' Last Exam
Hy3 Preview—Kimi K3.1 Pro43.2%SourceNot directly comparable
Agents' Last Exam (CLI)
Hy3 Preview—Kimi K3.1 Pro44.2%SourceNot directly comparable
APEX-Agents
Hy3 Preview—Kimi K3.1 Pro67.2%SourceNot directly comparable
Frontier Finance
Hy3 Preview—Kimi K3.1 Pro58.6%SourceNot directly comparable
HANDBOOK.md
Hy3 Preview—Kimi K3.1 Pro44.6%SourceNot directly comparable
OSWorld 2.0
Hy3 Preview—Kimi K3.1 Pro79.6%SourceNot directly comparable
Business Operation
Hy3 Preview—Kimi K3.1 Pro37.8%SourceNot directly comparable
Financial Modeling
Hy3 Preview—Kimi K3.1 Pro57.6%SourceNot directly comparable
Financial Research
Hy3 Preview—Kimi K3.1 Pro70.4%SourceNot directly comparable
Kimi Hallu Bench Hard (tools)
Hy3 Preview—Kimi K3.1 Pro8.3%SourceNot directly comparable
ExploitGym
Hy3 Preview—Kimi K3.1 Pro20.7%SourceNot directly comparable
Coding
SWE-bench Verified
Hy3 Preview74.4%SourceKimi K3.1 Pro—Not directly comparable
Terminal-Bench 2.0
Hy3 Preview54.4%SourceKimi K3.1 Pro—Not directly comparable
DeepSWE
Hy3 Preview—Kimi K3.1 Pro75.5%SourceNot directly comparable
ProgramBench (binary)
Hy3 Preview—Kimi K3.1 Pro31.5%SourceNot directly comparable
Kimi Code Bench v2
Hy3 Preview—Kimi K3.1 Pro77.1%SourceNot directly comparable
Kimi Code Bench 3.0 Long-horizon
Hy3 Preview—Kimi K3.1 Pro61.2%SourceNot directly comparable
sweMarathon
Hy3 Preview—Kimi K3.1 Pro51.7%SourceNot directly comparable
PostTrainBench v1.2
Hy3 Preview—Kimi K3.1 Pro36.5%SourceNot directly comparable
Multimodal
OfficeQA Pro
Hy3 Preview—Kimi K3.1 Pro67.4%SourceNot directly comparable
OfficeQA Pro v2
Hy3 Preview—Kimi K3.1 Pro64.4%SourceNot directly comparable
BenchCAD Vision2Code (no tools)
Hy3 Preview—Kimi K3.1 Pro0.728SourceNot directly comparable
BenchCAD Vision2Code (tools)
Hy3 Preview—Kimi K3.1 Pro0.927SourceNot directly comparable
MMMU-Pro
Hy3 Preview—Kimi K3.1 Pro84.1%SourceNot directly comparable
MMMU-Pro w/ Python
Hy3 Preview—Kimi K3.1 Pro90%SourceNot directly comparable
CharXiv
Hy3 Preview—Kimi K3.1 Pro93.4%SourceNot directly comparable
CharXiv w/o tools
Hy3 Preview—Kimi K3.1 Pro89%SourceNot directly comparable
Chartography (tools)
Hy3 Preview—Kimi K3.1 Pro90.2%SourceNot directly comparable
BabyVision w/ Python
Hy3 Preview—Kimi K3.1 Pro95.4%SourceNot directly comparable
ZeroBench
Hy3 Preview—Kimi K3.1 Pro39.0%SourceNot directly comparable
ZeroBench w/ Python
Hy3 Preview—Kimi K3.1 Pro63.0%SourceNot directly comparable
GDP.pdf (Gemini judge)
Hy3 Preview—Kimi K3.1 Pro34.6%SourceNot directly comparable
GDP.pdf w/ Python (Gemini judge)
Hy3 Preview—Kimi K3.1 Pro85.7%SourceNot directly comparable
PerceptionBench
Hy3 Preview—Kimi K3.1 Pro68.3%SourceNot directly comparable
Knowledge
GPQA
Hy3 Preview87.2%SourceKimi K3.1 Pro94.2%SourceKimi K3.1 Pro leads this result
GPQA-D
Hy3 Preview87.2%SourceKimi K3.1 Pro94.2%SourceKimi K3.1 Pro leads this result
HLE
Hy3 Preview—Kimi K3.1 Pro70%SourceNot directly comparable
HLE w/o tools
Hy3 Preview—Kimi K3.1 Pro51.1%SourceNot directly comparable
Kimi Hallu Bench
Hy3 Preview—Kimi K3.1 Pro5.4%SourceNot directly comparable
46 public results · 2 shared
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Last updated October 23, 2026