Knowledge
Like-for-like- Gemini 3.1 Pro
- 66.0
- Supported · #22/184
- GPT-4.1 nano
- 29.7
- Supported · #180/184
- Basis
- BenchAlign lane · 6 vs 2 public rows
- Reading
- Gemini 3.1 Pro leads
Gemini 3.1 Pro vs GPT-4.1 nano
Decision reading
Gemini 3.1 Pro has the higher public score, 70.14 versus 27.21, and the 90% score intervals do not overlap.
1 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.
Updated September 18, 2026. Rank says Gemini 3.1 Pro 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
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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.
Chat turn cost
1K fresh input + 500 output tokens
GPT-4.1 nano
GPT-4.1 nano has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Cache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
GPT-4.1 nano
GPT-4.1 nano has the lower estimated token cost for this stated workload. GPT-4.1 nano has no published cached-input rate, so cached tokens use its listed input rate.
Confidence: rate-fallback
Show secondary and unsupported calls
Repository review cost
50K fresh input + 3K output tokens
GPT-4.1 nano
GPT-4.1 nano has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Coding work
Code generation, repair, and software-engineering tasks
Not enough matched evidence
GPT-4.1 nano is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like.
Confidence: limited
Agentic work
Tool use, computer use, and multi-step task completion
Not enough matched evidence
GPT-4.1 nano is 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
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.
46.1Gemini 3.1 Pro31.1GPT-4.1 nano
Directional only · BenchAlign
Gemini 3.1 Pro scores higher, but at least one score rests on Estimated evidence or a different benchmark set. Directional only, no winner.
Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
27 Gemini 3.1 Pro only
1 Shared
3 GPT-4.1 nano only
- Shared results
- 1
- Gemini 3.1 Pro only
- 27
- GPT-4.1 nano only
- 3
- Like-for-like categories
- 1 / 8
2 categories rest 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.
Agentic
Directional only- Gemini 3.1 Pro
- 39.7
- Supported · #121/154
- GPT-4.1 nano
- 33.6
- Estimated · #139/154
- Basis
- BenchAlign lane · 6 vs 0 public rows
- Reading
- Directional only
Coding
Directional only- Gemini 3.1 Pro
- 46.1
- Supported · #88/154
- GPT-4.1 nano
- 31.1
- Estimated · #139/154
- Basis
- BenchAlign lane · 5 vs 0 public rows
- Reading
- Directional only
Reasoning
Not comparable- Gemini 3.1 Pro
- 50.7
- Unranked · 2 rankable rows
- GPT-4.1 nano
- 35.0
- Unranked · 2 rankable rows
- Basis
- Provisional lane · 2 vs 0 weighted rows
- Reading
- Not comparable
Math
Not comparable- Gemini 3.1 Pro
- 54.2
- Unranked · 2 rankable rows
- GPT-4.1 nano
- 25.4
- Unranked · 1 rankable row
- Basis
- Provisional lane · 2 vs 1 weighted rows
- Reading
- Not comparable
Multilingual
Not comparable- Gemini 3.1 Pro
- Not ranked
- GPT-4.1 nano
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- Gemini 3.1 Pro
- 79.1
- #12/48
- GPT-4.1 nano
- 25.4
- Unranked · 1 rankable row
- Basis
- Provisional lane · 2 vs 0 weighted rows
- Reading
- Not comparable
Instruction following
Not comparable- Gemini 3.1 Pro
- Not ranked
- GPT-4.1 nano
- 34.6
- #109/124
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
| Category | Gemini 3.1 Pro | GPT-4.1 nano | Basis | Reading |
|---|---|---|---|---|
| Knowledge | 66.0Supported · #22/184 | 29.7Supported · #180/184 | Like-for-likeBenchAlign lane · 6 vs 2 public rows | Gemini 3.1 Pro leads |
| Agentic | 39.7Supported · #121/154 | 33.6Estimated · #139/154 | Directional onlyBenchAlign lane · 6 vs 0 public rows | Directional only |
| Coding | 46.1Supported · #88/154 | 31.1Estimated · #139/154 | Directional onlyBenchAlign lane · 5 vs 0 public rows | Directional only |
| Reasoning | 50.7Unranked · 2 rankable rows | 35.0Unranked · 2 rankable rows | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
| Math | 54.2Unranked · 2 rankable rows | 25.4Unranked · 1 rankable row | Not comparableProvisional lane · 2 vs 1 weighted rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Multimodal | 79.1#12/48 | 25.4Unranked · 1 rankable row | Not comparableProvisional lane · 2 vs 0 weighted rows | Not comparable |
| Instruction following | Not ranked | 34.6#109/124 | 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.
FrontierMath v2 (Tiers 1-3)
Math
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 3.1 Pro
- $0.008
- Fits in one request
- GPT-4.1 nano
- $0.0003
- Fits in one request
GPT-4.1 nano has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- Gemini 3.1 Pro
- $0.136
- Fits in one request
- GPT-4.1 nano
- $0.0062
- Fits in one request
GPT-4.1 nano 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 3.1 Pro
- $0.2
- Fits in one request
- GPT-4.1 nano
- $0.026
- Fits in one request
- Cached input priced at the published list-input rate
GPT-4.1 nano has the lower modeled cost
GPT-4.1 nano has no published cached-input rate, so cached tokens use its listed input rate.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationGemini 3.1 ProGPT-4.1 nano
Context window
Maximum documented context; output-token limits may be lower.
Gemini 3.1 Pro
GPT-4.1 nano
1M
API model ID
Gemini 3.1 Pro
gemini-3.1-pro-preview
Google Gemini 3.1 Pro Preview model documentationGPT-4.1 nano
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Gemini 3.1 Pro
$0.2 per 1M cached input tokens
Google Gemini API pricingGPT-4.1 nano
Not published
Documented inputs
Gemini 3.1 Pro
text, image, video, audio, pdf
Google Gemini 3.1 Pro Preview model documentationGPT-4.1 nano
Not sourced
Documented outputs
Gemini 3.1 Pro
GPT-4.1 nano
Not sourced
Provider availability
Gemini 3.1 Pro
Preview · Gemini API, Google AI Studio
Google Gemini model catalogGPT-4.1 nano
Not sourced
Reasoning profile
Gemini 3.1 Pro
Reasoning
GPT-4.1 nano
Non-Reasoning
Weight access
Gemini 3.1 Pro
Proprietary
GPT-4.1 nano
Proprietary
License
Gemini 3.1 Pro
Proprietary
GPT-4.1 nano
Proprietary
Release date
Gemini 3.1 Pro
2026-02-19
GPT-4.1 nano
2025-04-14
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 3.1 Pro has the higher public score, 70.14 versus 27.21, and the 90% score intervals do not overlap.
- Workload cost
- Repository review: $0.136 vs $0.0062. Cache-heavy agent loop: $0.2 vs $0.026.
- 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 evidence31 rows
Agentic
Claw-Eval
Gemini 3.1 Pro57.8%SourceGPT-4.1 nano—Not directly comparable
DeepSearchQA
Gemini 3.1 Pro69.7%SourceGPT-4.1 nano—Not directly comparable
τ²-bench results
Gemini 3.1 Pro95.6%SourceGPT-4.1 nano—Not directly comparable
Gert Labs
Gemini 3.1 Pro56.87%SourceGPT-4.1 nano—Not directly comparable
ResearchClawBench
Gemini 3.1 Pro13.3%SourceGPT-4.1 nano—Not directly comparable
Terminal-Bench 2.1 (Vals)
Gemini 3.1 Pro70.8%SourceGPT-4.1 nano—Not directly comparable
Coding
LiveCodeBench Pro
Gemini 3.1 Pro82.9%SourceGPT-4.1 nano—Not directly comparable
React Native Evals
Gemini 3.1 Pro78.9%SourceGPT-4.1 nano—Not directly comparable
Vibe Code Bench
Gemini 3.1 Pro32.03%SourceGPT-4.1 nano—Not directly comparable
LiveCodeBench (Vals)
Gemini 3.1 Pro88.5%SourceGPT-4.1 nano—Not directly comparable
SWE-bench (Vals)
Gemini 3.1 Pro78.8%SourceGPT-4.1 nano—Not directly comparable
Reasoning
Knowledge
GPQA-D
Gemini 3.1 Pro94.3%SourceGPT-4.1 nano—Not directly comparable
HLE w/o tools
Gemini 3.1 Pro45.4%SourceGPT-4.1 nano—Not directly comparable
HealthBench Hard
Gemini 3.1 Pro20.6%SourceGPT-4.1 nano—Not directly comparable
MedXpertQA (Text)
Gemini 3.1 Pro71.5%SourceGPT-4.1 nano—Not directly comparable
GPQA Diamond (Vals)
Gemini 3.1 Pro95.5%SourceGPT-4.1 nano—Not directly comparable
MMLU-Pro (Vals)
Gemini 3.1 Pro91.0%SourceGPT-4.1 nano—Not directly comparable
MMLU
Gemini 3.1 Pro—GPT-4.1 nano80.1%SourceNot directly comparable
GPQA
Gemini 3.1 Pro—GPT-4.1 nano50.3%SourceNot directly comparable
Math
FrontierMath v2 (Tiers 1-3)
Shared sourceGemini 3.1 Pro36.900%GPT-4.1 nano1.034%Gemini 3.1 Pro leads this result
FrontierMath v2 (Tier 4)
Gemini 3.1 Pro16.700%SourceGPT-4.1 nano—Not directly comparable
Multimodal
MMMU-Pro
Gemini 3.1 Pro83.9%SourceGPT-4.1 nano—Not directly comparable
CharXiv
Gemini 3.1 Pro80.2%SourceGPT-4.1 nano—Not directly comparable
ERQA
Gemini 3.1 Pro69.4%SourceGPT-4.1 nano—Not directly comparable
SimpleVQA
Gemini 3.1 Pro72.4%SourceGPT-4.1 nano—Not directly comparable
ScreenSpot Pro
Gemini 3.1 Pro84.4%SourceGPT-4.1 nano—Not directly comparable
ZeroBench
Gemini 3.1 Pro29.0%SourceGPT-4.1 nano—Not directly comparable
MedXpertQA (MM)
Gemini 3.1 Pro81.3%SourceGPT-4.1 nano—Not directly comparable
Instruction following
IFEval
Gemini 3.1 Pro—GPT-4.1 nano83.2%SourceNot directly comparable
Questions
Which is better, Gemini 3.1 Pro or GPT-4.1 nano?
Gemini 3.1 Pro has the higher public score, 70.14 versus 27.21, 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, Gemini 3.1 Pro or GPT-4.1 nano?
Gemini 3.1 Pro scores higher for coding on the public lane, 46.1 to 31.1. GPT-4.1 nano is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like. BenchLM does not name a winner for coding from a directional reading; read the shared benchmark rows directly and test the models on the same task set.
Which is better for agentic tasks, Gemini 3.1 Pro or GPT-4.1 nano?
Gemini 3.1 Pro scores higher for agentic tasks on the public lane, 39.7 to 33.6. GPT-4.1 nano 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, Gemini 3.1 Pro or GPT-4.1 nano?
For the stated presets, chat costs $0.008 on Gemini 3.1 Pro and $0.0003 on GPT-4.1 nano; repository review costs $0.136 and $0.0062; the cache-heavy agent loop costs $0.2 and $0.026. GPT-4.1 nano has no published cached-input rate, so cached tokens use its listed input rate.
Which has the larger context window, Gemini 3.1 Pro or GPT-4.1 nano?
Both models list the same context window, 1M.
Related comparisons
Last updated September 18, 2026
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