Agentic
Like-for-like- Gemini 3 Flash
- 34.0
- Supported · #134/152
- Grok 4.3
- 26.9
- Supported · #144/152
- Basis
- BenchAlign lane · 4 vs 3 public rows
- Reading
- Gemini 3 Flash leads · intervals overlap
Gemini 3 Flash vs Grok 4.3
Updated September 10, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.
Decision reading
Gemini 3 Flash has the higher public score estimate, 62.2 versus 59.73, but the 90% score intervals overlap. Treat that as a lead, not a settled winner.
6 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
Share or export
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.
Coding work
Code generation, repair, and software-engineering tasks
Gemini 3 Flash
Gemini 3 Flash leads on the public coding lane, 41.5 to 33.6, with Supported evidence for both models, although the 90% intervals overlap.
Confidence: limited
Agentic work
Tool use, computer use, and multi-step task completion
Gemini 3 Flash
Gemini 3 Flash leads on the public agentic lane, 34 to 26.9, with Supported evidence for both models, although the 90% intervals overlap.
Confidence: limited
Chat turn cost
1K fresh input + 500 output tokens
Gemini 3 Flash
Gemini 3 Flash has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Show secondary and unsupported calls
Cache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
Gemini 3 Flash
Gemini 3 Flash has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Repository review cost
50K fresh input + 3K output tokens
Gemini 3 Flash
Gemini 3 Flash has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Long documents
Prompts that approach the documented context limit
No clear pick
The documented context windows are equal.
Confidence: documented
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
5 Gemini 3 Flash only
6 Shared
1 Grok 4.3 only
- Shared results
- 6
- Gemini 3 Flash only
- 5
- Grok 4.3 only
- 1
- Like-for-like categories
- 3 / 8
1 category rests on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.
Category results, on a stated basis
Each row shows the public-lane category score for both models: the BenchAlign 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.
Coding
Like-for-like- Gemini 3 Flash
- 41.5
- Supported · #108/151
- Grok 4.3
- 33.6
- Supported · #131/151
- Basis
- BenchAlign lane · 3 vs 2 public rows
- Reading
- Gemini 3 Flash leads · intervals overlap
Knowledge
Like-for-like- Gemini 3 Flash
- 56.9
- Supported · #45/183
- Grok 4.3
- 57.0
- Supported · #44/183
- Basis
- BenchAlign lane · 2 vs 2 public rows
- Reading
- Practical tie
Instruction following
Directional only- Gemini 3 Flash
- 66.2
- #68/123
- Grok 4.3
- 94.4
- #2/123
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Directional only
Reasoning
Not comparable- Gemini 3 Flash
- 59.0
- Unranked · 2 rankable rows
- Grok 4.3
- 65.2
- Unranked · 2 rankable rows
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Math
Not comparable- Gemini 3 Flash
- 50.2
- Unranked · 2 rankable rows
- Grok 4.3
- Not ranked
- Basis
- Provisional lane · 2 vs 0 weighted rows
- Reading
- Not comparable
Multilingual
Not comparable- Gemini 3 Flash
- Not ranked
- Grok 4.3
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- Gemini 3 Flash
- 75.8
- Unranked · 1 rankable row
- Grok 4.3
- 65.6
- #25/48
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
| Category | Gemini 3 Flash | Grok 4.3 | Basis | Reading |
|---|---|---|---|---|
| Agentic | 34.0Supported · #134/152 | 26.9Supported · #144/152 | Like-for-likeBenchAlign lane · 4 vs 3 public rows | Gemini 3 Flash leads · intervals overlap |
| Coding | 41.5Supported · #108/151 | 33.6Supported · #131/151 | Like-for-likeBenchAlign lane · 3 vs 2 public rows | Gemini 3 Flash leads · intervals overlap |
| Knowledge | 56.9Supported · #45/183 | 57.0Supported · #44/183 | Like-for-likeBenchAlign lane · 2 vs 2 public rows | Practical tie |
| Instruction following | 66.2#68/123 | 94.4#2/123 | Directional onlyProvisional lane · 0 vs 0 weighted rows | Directional only |
| Reasoning | 59.0Unranked · 2 rankable rows | 65.2Unranked · 2 rankable rows | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Math | 50.2Unranked · 2 rankable rows | Not ranked | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Multimodal | 75.8Unranked · 1 rankable row | 65.6#25/48 | 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) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.
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.
MMLU-Pro (Vals)
Knowledge
LiveCodeBench (Vals)
Coding
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
- Gemini 3 Flash
- $0.002
- Fits in one request
- Grok 4.3
- $0.0025
- Fits in one request
Gemini 3 Flash has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- Gemini 3 Flash
- $0.034
- Fits in one request
- Grok 4.3
- $0.07
- Fits in one request
Gemini 3 Flash has the lower modeled cost
Costs use the listed standard API rates.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- Gemini 3 Flash
- $0.05
- Fits in one request
- Grok 4.3
- $0.09
- Fits in one request
Gemini 3 Flash has the lower modeled cost
Costs use the listed standard API rates.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationGemini 3 FlashGrok 4.3
Context window
Maximum documented context; output-token limits may be lower.
Gemini 3 Flash
Grok 4.3
1M
API model ID
Gemini 3 Flash
gemini-3-flash-preview
Google Gemini API pricingGrok 4.3
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Gemini 3 Flash
$0.05 per 1M cached input tokens
Google Gemini API pricingGrok 4.3
$0.2 per 1M cached input tokens
Documented inputs
Gemini 3 Flash
Not sourced
Grok 4.3
Not sourced
Documented outputs
Gemini 3 Flash
Not sourced
Grok 4.3
Not sourced
Provider availability
Gemini 3 Flash
Not sourced
Grok 4.3
Not sourced
Reasoning profile
Gemini 3 Flash
Non-Reasoning
Grok 4.3
Reasoning
Weight access
Gemini 3 Flash
Proprietary
Grok 4.3
Proprietary
License
Gemini 3 Flash
Proprietary
Grok 4.3
Proprietary
Release date
Gemini 3 Flash
2025-12-01
Grok 4.3
2026-04-30
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
- Gemini 3 Flash has the higher public score estimate, 62.2 versus 59.73, but the 90% score intervals overlap.
- Workload cost
- Repository review: $0.034 vs $0.07. Cache-heavy agent loop: $0.05 vs $0.09.
- Context tradeoff
- Both models list 1M.
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 evidence12 rows
Agentic
Claw-Eval
Gemini 3 Flash49.2%SourceGrok 4.3—Not directly comparable
Gert Labs
Shared sourceGemini 3 Flash56.63%Grok 4.343.86%Gemini 3 Flash leads this result
JobBench
Gemini 3 Flash11.4%SourceGrok 4.3—Not directly comparable
Terminal-Bench 2.1 (Vals)
Gemini 3 Flash53.9%SourceGrok 4.341.9%SourceGemini 3 Flash leads this result
ResearchClawBench
Gemini 3 Flash—Grok 4.312.4%SourceNot directly comparable
Coding
Knowledge
Math
Frequently asked questions
Which is better, Gemini 3 Flash or Grok 4.3?
Gemini 3 Flash has the higher public score estimate, 62.2 versus 59.73, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.
Which is better for coding, Gemini 3 Flash or Grok 4.3?
Gemini 3 Flash leads the public coding lane, 41.5 to 33.6, with Supported evidence for both models, although the 90% intervals overlap.
Which is better for agentic tasks, Gemini 3 Flash or Grok 4.3?
Gemini 3 Flash leads the public agentic tasks lane, 34 to 26.9, with Supported evidence for both models, although the 90% intervals overlap.
Which costs less, Gemini 3 Flash or Grok 4.3?
For the stated presets, chat costs $0.002 on Gemini 3 Flash and $0.0025 on Grok 4.3; repository review costs $0.034 and $0.07; the cache-heavy agent loop costs $0.05 and $0.09. Costs use the listed standard API rates.
Which has the larger context window, Gemini 3 Flash or Grok 4.3?
Both models list the same context window, 1M.
Related comparisons
Last updated September 10, 2026
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