Gemini 2.5 Flash vs Grok 3 Mini
Gemini 2.5 Flash (2025) and Grok 3 Mini (2025) are general-purpose language models from Google DeepMind and xAI. Gemini 2.5 Flash ships a 1m-token context window, while Grok 3 Mini ships a 131k-token context window. On pricing, Grok 3 Mini costs $0.25/1M input tokens versus $0.30/1M 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.
Gemini 2.5 Flash fits 8x more tokens; pick it for long-context work and Grok 3 Mini for tighter calls.
Decision scorecard
Local evidence first| Signal | Gemini 2.5 Flash | Grok 3 Mini |
|---|---|---|
| Best for | multimodal apps, tool-calling agents, and long-context analysis | multimodal apps and provider-routed production |
| Decision fit | Coding, RAG, and Agents | RAG, Long context, and Vision |
| Context window | 1m | 131k |
| Cheapest output | $2.50/1M tokens | $1.27/1M tokens |
| Provider routes | 6 tracked | 2 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Gemini 2.5 Flash has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Gemini 2.5 Flash has broader tracked provider coverage for fallback and route flexibility.
- Gemini 2.5 Flash uniquely exposes JSON / Tool use and Code execution in local model data.
- Local decision data tags Gemini 2.5 Flash for Coding, RAG, and Agents.
- Grok 3 Mini has the lower cheapest tracked output price at $1.27/1M tokens.
- Local decision data tags Grok 3 Mini for RAG, Long context, and Vision.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Gemini 2.5 Flash
$865
Cheapest tracked route/tier: Google AI Studio
Grok 3 Mini
$518
Cheapest tracked route/tier: Microsoft Foundry
Estimated monthly gap: $348. 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.
- Grok 3 Mini is $1.23/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for JSON / Tool use and Code execution before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Gemini 2.5 Flash is $1.23/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Gemini 2.5 Flash adds JSON / Tool use and Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-06-17 | 2025-02-17 |
| Context window | 1m | 131k |
| Parameters | — | — |
| Architecture | 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 | 2024-11 |
Pricing and availability
| Pricing attribute | Gemini 2.5 Flash | Grok 3 Mini |
|---|---|---|
| Input price | $0.30/1M tokens | $0.25/1M tokens |
| Output price | $2.50/1M tokens | $1.27/1M tokens |
| Providers |
Capabilities
| Capability | Gemini 2.5 Flash | Grok 3 Mini |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| 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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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.