Gemini Robotics-ER 1.6 Preview vs GPT-4o-mini Search Preview
Gemini Robotics-ER 1.6 Preview (2026) and GPT-4o-mini Search Preview (2025) are frontier reasoning models from Google DeepMind and OpenAI. Both ship a 128k-token context window. On pricing, GPT-4o-mini Search Preview costs $0.15/1M input tokens versus $1/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
GPT-4o-mini Search Preview is ~567% cheaper at $0.15/1M; pay for Gemini Robotics-ER 1.6 Preview only for reasoning depth.
Decision scorecard
Local evidence first| Signal | Gemini Robotics-ER 1.6 Preview | GPT-4o-mini Search Preview |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | provider-routed production |
| Decision fit | RAG, Agents, and Long context | RAG, Long context, and Classification |
| Context window | 128k | 128k |
| Cheapest output | $5/1M tokens | $0.60/1M tokens |
| Provider routes | 1 tracked | 3 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Gemini Robotics-ER 1.6 Preview uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags Gemini Robotics-ER 1.6 Preview for RAG, Agents, and Long context.
- GPT-4o-mini Search Preview has the lower cheapest tracked output price at $0.60/1M tokens.
- GPT-4o-mini Search Preview has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags GPT-4o-mini Search Preview for RAG, Long context, and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Gemini Robotics-ER 1.6 Preview
$2,050
Cheapest tracked route/tier: Google AI Studio
GPT-4o-mini Search Preview
$270
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $1,780. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Gemini Robotics-ER 1.6 Preview and GPT-4o-mini Search Preview; plan for SDK, billing, or endpoint changes.
- GPT-4o-mini Search Preview is $4.40/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
- No overlapping tracked provider route is sourced for GPT-4o-mini Search Preview and Gemini Robotics-ER 1.6 Preview; plan for SDK, billing, or endpoint changes.
- Gemini Robotics-ER 1.6 Preview is $4.40/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Gemini Robotics-ER 1.6 Preview adds Vision, Multimodal, and Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-14 | 2025-02-26 |
| Context window | 128k | 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 | - | 2023-10 |
Pricing and availability
| Pricing attribute | Gemini Robotics-ER 1.6 Preview | GPT-4o-mini Search Preview |
|---|---|---|
| Input price | $1/1M tokens | $0.15/1M tokens |
| Output price | $5/1M tokens | $0.60/1M tokens |
| Providers |
Capabilities
| Capability | Gemini Robotics-ER 1.6 Preview | GPT-4o-mini Search Preview |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | No |
| JSON / Tool use | Yes | No |
| Structured outputs | Yes | Yes |
| Code execution | No | 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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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.