Gemini 3.1 Pro Preview
- Family
- Gemini 3.1
- Released
- 2026-02-19
- Context
- 1m
- Architecture
- Decoder Only
- Knowledge cutoff
- 2025-01
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Pretrained
Cheapest of 5 routes · GCP Vertex AI
About
Google: Gemini 3.1 Pro Preview available via OpenRouter. Pricing: $2/1M input, $12/1M output.
Provider price ladder
Compare all 5Compare API pricing across 4 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Route |
|---|---|---|---|
| GCP Vertex AI | $2.00 | $12.00 | Serverless |
| Google AI Studio | $2.00 | $12.00 | Serverless |
| OpenRouter | $2.00 | $12.00 | Serverless |
| Replicate API | $2.00 | $12.00 | Serverless |
Available via routers & gateways(13)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.
AIRouter
RouterCommercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.
Kong AI Gateway
GatewayMulti-LLM AI gateway built on Kong Gateway 3.x, adding semantic routing, load balancing, guardrails, and MCP traffic analytics as plugins over Kong's existing API management platform.
Capabilities
Benchmark peer barsfor Coding
Benchmark scores(17)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| SWE-bench Pro | 54.2 | SWE-bench Pro Public (pass@1)Observed 2026-06-07 | — | Source |
| MMMU Pro | 88.2 | Vals.ai standardized CoT harness, 4-option, Pass@1, temp=0Observed 2026-06-02 | — | Source |
| SWE-bench Verified | 80.6 | SWE-bench VerifiedObserved 2026-04-24 | — | Source |
| τ-bench | 76.5 | τ-benchObserved 2026-04-24 | — | Source |
| MultiChallenge | 71.4 | MultiChallengeObserved 2026-04-26 | — | Source |
| Google-Proof Q&A | 94.3 | diamondObserved 2026-04-27 | — | Source |
| ARC Prize / ARC Challenge | 77.1 | ARC-AGI-2Observed 2026-04-27 | — | Source |
| Chatbot Arena | 1493.0 | —Observed 2026-04-28 | — | Source |
| AIME 2025 | 95.0 | AIME 2025 (accuracy)Observed 2026-06-07 | — | Source |
| ARC-AGI-2 | 77.1 | ARC-AGI-2 (accuracy%)Observed 2026-06-07 | — | Source |
| BrowseComp | 85.9 | BrowseComp (accuracy)Observed 2026-06-07 | — | Source |
| Humanity's Last Exam | 51.4 | HLE with tools (accuracy)Observed 2026-06-07 | — | Source |
| HumanEval | 94.0 | HumanEval (pass@1)Observed 2026-06-07 | — | Source |
| LiveCodeBench | 91.7 | Rank 1 on pricepertoken (pass@1)Observed 2026-06-07 | — | Source |
| MCP-Atlas | 69.2 | MCP-Atlas (accuracy%)Observed 2026-06-07 | — | Source |
| Massive Multitask Language Understanding | 98.0 | MMLU (accuracy)Observed 2026-06-07 | — | Source |
| MMLU PRO | 91.0 | MMLU-Pro (accuracy)Observed 2026-06-07 | — | Source |
Migration checks
No linked migration route is available for this model yet.
Rankings & picks(8)
Compare Gemini 3.1 Pro Preview with other models
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- Gemini 3.1 Pro Preview vs Claude Opus 4.7572
- Gemini 3.1 Pro Preview vs GPT-5.5 Pro386
- Gemini 3.1 Pro Preview vs Claude Sonnet 4.5160
- Gemini 3.1 Pro Preview vs GPT-5.5156
- Gemini 3.1 Pro Preview vs Qwen3.6-Max66
Comparison and alternatives
Browse all comparisons →Show all 18 popular comparisonssorted by 7-day search impressions
Cheapest of 5 routes · GCP Vertex AI