Agentic
Like-for-like- Grok 4.5
- 83.3
- Hy3 Preview
- 54.4
- Weighted basis
- 1 vs 1 rows
- Reading
- Grok 4.5 leads
Grok 4.5 vs Hy3 Preview
Updated August 22, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.
Decision reading
Grok 4.5 has the higher public score, 75.19 versus 43.89, and the 90% score intervals do not overlap.
2 results are shared. Category rows based on different benchmark sets are marked directional and do not name a winner.
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.
Agentic work
Tool use, computer use, and multi-step task completion
Grok 4.5
Grok 4.5 leads on the same 1 weighted benchmark row.
Confidence: limited
Long documents
Prompts that approach the documented context limit
Grok 4.5
Grok 4.5 has the larger documented context window.
Confidence: documented
Show secondary and unsupported calls
Coding work
Code generation, repair, and software-engineering tasks
Not enough matched evidence
No shared weighted benchmark basis supports a winner.
Confidence: limited
Chat 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-rates
Cache-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-rates
Repository 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
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
8 Grok 4.5 only
2 Shared
4 Hy3 Preview only
- Shared results
- 2
- Grok 4.5 only
- 8
- Hy3 Preview only
- 4
- Like-for-like categories
- 1 / 8
Category results, on a stated basis
Each row states whether both averages use the same weighted benchmark set. Directional and not-comparable rows remain visible, but they never receive a winner in this template.
Coding
Not comparable- Grok 4.5
- 64.7
- Hy3 Preview
- 74.4
- Weighted basis
- 1 vs 1 rows
- Reading
- Not comparable
Reasoning
Not comparable- Grok 4.5
- 52.6
- Hy3 Preview
- Not measured
- Weighted basis
- 1 vs 0 rows
- Reading
- Not comparable
Knowledge
Not comparable- Grok 4.5
- Not measured
- Hy3 Preview
- 87.2
- Weighted basis
- 0 vs 1 rows
- Reading
- Not comparable
Math
Not comparable- Grok 4.5
- Not measured
- Hy3 Preview
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Multilingual
Not comparable- Grok 4.5
- Not measured
- Hy3 Preview
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Multimodal
Not comparable- Grok 4.5
- Not measured
- Hy3 Preview
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Instruction following
Not comparable- Grok 4.5
- Not measured
- Hy3 Preview
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
| Category | Grok 4.5 | Hy3 Preview | Weighted basis | Reading |
|---|---|---|---|---|
| Agentic | 83.3 | 54.4 | Like-for-like1 vs 1 rows | Grok 4.5 leads |
| Coding | 64.7 | 74.4 | Not comparable1 vs 1 rows | Not comparable |
| Reasoning | 52.6 | Not measured | Not comparable1 vs 0 rows | Not comparable |
| Knowledge | Not measured | 87.2 | Not comparable0 vs 1 rows | Not comparable |
| Math | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Multilingual | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Multimodal | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Instruction following | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
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.
Terminal-Bench 2.0
Agentic
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
- Grok 4.5
- $0.005
- Fits in one request
- Hy3 Preview
- Self-hosted; infrastructure cost varies
- Fits in one request
Hy3 Preview has no comparable published API token rate.
Repository review
50K fresh input + 3K output tokens
- Grok 4.5
- $0.118
- Fits in one request
- Hy3 Preview
- Self-hosted; infrastructure cost varies
- 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
- Grok 4.5
- $0.16
- Fits in one request
- Hy3 Preview
- Self-hosted; infrastructure cost varies
- Fits in one request
- Cached-input rate unavailable
Hy3 Preview has no comparable published API token rate.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationGrok 4.5Hy3 Preview
Context window
Maximum documented context; output-token limits may be lower.
Grok 4.5
500K
Hy3 Preview
256K
API model ID
Grok 4.5
Not sourced
Hy3 Preview
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Grok 4.5
$0.3 per 1M cached input tokens
Hy3 Preview
No comparable hosted API rate
Documented inputs
Grok 4.5
Not sourced
Hy3 Preview
Not sourced
Documented outputs
Grok 4.5
Not sourced
Hy3 Preview
Not sourced
Provider availability
Grok 4.5
Not sourced
Hy3 Preview
Not sourced
Reasoning profile
Grok 4.5
Reasoning
Hy3 Preview
Reasoning
Weight access
Grok 4.5
Proprietary
Hy3 Preview
Open Weight
License
Grok 4.5
Proprietary
Hy3 Preview
Open Weight
Release date
Grok 4.5
2026-07-08
Hy3 Preview
2026-04-23
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
- Grok 4.5 has the higher public score, 75.19 versus 43.89, and the 90% score intervals do not overlap.
- Workload cost
- A complete comparable API-rate estimate is not available for both models.
- Context tradeoff
- Grok 4.5 has the larger documented window (500K).
Run the same representative tasks against both endpoints before changing production traffic.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Browse raw public benchmark evidence14 rows
Agentic
Coding
SWE-bench Pro
Grok 4.564.7%SourceHy3 Preview—Not directly comparable
SWE Multilingual
Grok 4.578%SourceHy3 Preview—Not directly comparable
Terminal-Bench 2.0
Grok 4.583.3%SourceHy3 Preview54.4%SourceGrok 4.5 leads this result
cursorBench32
Grok 4.566.7%SourceHy3 Preview—Not directly comparable
VulcanBench v3
Grok 4.591.3%SourceHy3 Preview—Not directly comparable
SWE-bench Verified
Grok 4.5—Hy3 Preview74.4%SourceNot directly comparable
Reasoning
Knowledge
Frequently asked questions
Which is better, Grok 4.5 or Hy3 Preview?
Grok 4.5 has the higher public score, 75.19 versus 43.89, and the 90% score intervals do not overlap. That is the clearest overall quality signal in the current public data.
Which is better for coding, Grok 4.5 or Hy3 Preview?
The published evidence does not provide a shared weighted coding basis for both models, so BenchLM does not name a coding winner.
Which is better for agentic tasks, Grok 4.5 or Hy3 Preview?
Grok 4.5 leads the like-for-like agentic tasks comparison across 1 shared weighted benchmark row.
Which costs less, Grok 4.5 or Hy3 Preview?
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, Grok 4.5 or Hy3 Preview?
Grok 4.5 has the larger documented context window: 500K, compared with 256K.
Related comparisons
Last updated August 22, 2026
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