Gemini 3.1 Pro vs Granite 4.2 3B
Model Markets Rankings
Intelligence, Cost, and Efficiency
| Ranking | Gemini 3.1 Pro | Granite 4.2 3B |
|---|---|---|
| CostLower is better · Published-token output estimate | #22 of 36$0.161 per LiveBench case | UnrankedNot in the 36-model eligible cohort |
Ranks come from the current complete eligible cohorts. Green highlights appear only when both models are ranked in the same metric. Missing required inputs remain unranked, and the three dimensions are not collapsed into an overall winner.
Benchmark Performance
Available Benchmarks
| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B |
|---|---|---|
| LMArena Text Arenatext-2026-09-01-011508720696 · arena_rating · leader | 1,480.10100% of row best · rating · gemini-3.1-pro-preview; 95% CI [1476.89767236, 1483.30025658]; votes 102763; rank 11 | 1,298.8388% of row best · rating · granite-4.2-3b; 95% CI [1287.13258156, 1310.53627273]; votes 3097; rank 233 |
| Overall ResultCounted from the protocol-matched rows above | 1 benchmark winOverall lead | 0 benchmark wins |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Technical Differences
Side-by-Side Facts
| Field | Gemini 3.1 Pro | Granite 4.2 3B |
|---|---|---|
| Developer | Google DeepMind | IBM |
| Family | Gemini 3 | Granite 4 2 |
| Model | Gemini 3.1 Pro | Granite 4.2 3B |
| Version | Gemini 3.1 Pro | Granite 4.2 3B |
| Lifecycle | preview | active |
| Released | Unknown | 2026-08-25 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image, Video, Audio, Document | Text |
| Output modalities | Text | Text |
| Context window | 1,049K | 131K |
| Total parameters | Unknown | 3.7B |
| Active parameters | Unknown | Unknown |
| License | Unknown | apache-2.0 |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Google AI (Standard), Google Gemini (Standard) | Deepinfra (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, structured_outputs, tools |
13 comparable fields · 11 material differences · Pair passes the primary-source comparison gate
Gemini 3.1 Pro Capabilities
Granite 4.2 3B Capabilities
Internal Comparison Graph
Related Comparisons
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|---|---|---|---|
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Gemini 3.1 ProGoogle DeepMind | vs |  Mistral Large 3Mistral AI | cross-developer peerstext |
Primary Evidence
Sources and Freshness
Questions
Gemini 3.1 Pro vs Granite 4.2 3B FAQs
Is Gemini 3.1 Pro or Granite 4.2 3B better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Gemini 3.1 Pro and Granite 4.2 3B, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Gemini 3.1 Pro or Granite 4.2 3B?+
Gemini 3.1 Pro is $2.00 and Granite 4.2 3B is $0.030 per million tokens, so Granite 4.2 3B is cheaper on this metric. Gemini 3.1 Pro is $12.00 and Granite 4.2 3B is $0.12 per million tokens, so Granite 4.2 3B is cheaper on this metric.
Which has a larger context window, Gemini 3.1 Pro or Granite 4.2 3B?+
Gemini 3.1 Pro has the larger sourced context window. Gemini 3.1 Pro supports 1,049K and Granite 4.2 3B supports 131K.
Which performs better in benchmarks, Gemini 3.1 Pro or Granite 4.2 3B?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Gemini 3.1 Pro or Granite 4.2 3B be self-hosted?+
Granite 4.2 3B is the only model in this pair currently marked as self-hostable. Gemini 3.1 Pro is not marked open weight; Granite 4.2 3B is open weight.
Can Gemini 3.1 Pro and Granite 4.2 3B understand images?+
Gemini 3.1 Pro is documented with image input; Granite 4.2 3B is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Gemini 3.1 Pro or Granite 4.2 3B?+
Neither has a larger sourced maximum output. Gemini 3.1 Pro is 66K and Granite 4.2 3B is —.
Do Gemini 3.1 Pro and Granite 4.2 3B support reasoning and tool use?+
Gemini 3.1 Pro: reasoning, tool calling, and image input. Granite 4.2 3B: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Gemini 3.1 Pro or Granite 4.2 3B?+
Gemini 3.1 Pro has 2 sourced provider routes; Granite 4.2 3B has 1, so Gemini 3.1 Pro has broader tracked availability.
Which offers better value, Gemini 3.1 Pro or Granite 4.2 3B?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.