Gemini 3.1 Pro Preview vs GPT-4o (2024-11-20)
Gemini 3.1 Pro Preview (2026) and GPT-4o (2024-11-20) (2024) are compact production models from Google DeepMind and OpenAI. Gemini 3.1 Pro Preview ships a 1m-token context window, while GPT-4o (2024-11-20) ships a 128k-token context window. On pricing, Gemini 3.1 Pro Preview ranges from $2 to $4/1M input tokens by tier; GPT-4o (2024-11-20) costs $2.50/1M input tokens. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Gemini 3.1 Pro Preview fits 8x more tokens; pick it for long-context work and GPT-4o (2024-11-20) for tighter calls.
Decision scorecard
Local evidence first| Signal | Gemini 3.1 Pro Preview | GPT-4o (2024-11-20) |
|---|---|---|
| Best for | multimodal apps, tool-calling agents, and long-context analysis | provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Long context |
| Context window | 1m | 128k |
| Cheapest output | $12/1M tokens | $10/1M tokens |
| Provider routes | 5 tracked | 2 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Gemini 3.1 Pro Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Gemini 3.1 Pro Preview has broader tracked provider coverage for fallback and route flexibility.
- Gemini 3.1 Pro Preview uniquely exposes Vision, Multimodal, and JSON / Tool use in local model data.
- Local decision data tags Gemini 3.1 Pro Preview for Coding, RAG, and Agents.
- GPT-4o (2024-11-20) has the lower cheapest tracked output price at $10/1M tokens.
- Local decision data tags GPT-4o (2024-11-20) for Coding, RAG, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Gemini 3.1 Pro Preview
$4,600
Cheapest tracked route/tier: Google AI Studio
GPT-4o (2024-11-20)
$4,500
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $100. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- GPT-4o (2024-11-20) is $2/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and JSON / Tool use before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Gemini 3.1 Pro Preview is $2/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Gemini 3.1 Pro Preview adds Vision, Multimodal, and JSON / Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-02-19 | 2024-11-20 |
| Context window | 1m | 128k |
| Parameters | — | — |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Weights | Not released | Not released |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2025-01 | 2023-10 |
Pricing and availability
| Pricing attribute | Gemini 3.1 Pro Preview | GPT-4o (2024-11-20) |
|---|---|---|
| Input price |
| $2.50/1M tokens |
| Output price |
| $10/1M tokens |
| Providers |
Capabilities
| Capability | Gemini 3.1 Pro Preview | GPT-4o (2024-11-20) |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | No | No |
| JSON / Tool use | Yes | No |
| Structured outputs | Yes | Yes |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
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Popular comparisons for Gemini 3.1 Pro Preview
Popular comparisons for GPT-4o (2024-11-20)
Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.