Codex Mini Latest vs Gemma 3 12B
Codex Mini Latest (2025) and Gemma 3 12B (2026) compare a coding-specialized model against a standalone API model. Codex Mini Latest ships a 200k-token context window, while Gemma 3 12B ships a 33k-token context window. This page treats the result as workflow and deployment fit, not a universal model winner.
Treat this as a product-type comparison: Codex Mini Latest is coding-specialized model, while Gemma 3 12B is standalone API model. Choose based on workflow fit before reading any benchmark or price row as decisive.
Decision scorecard
Local evidence first| Signal | Codex Mini Latest | Gemma 3 12B |
|---|---|---|
| Product type | Coding-specialized model | Standalone API model |
| Best for | custom coding agents and code generation | provider-routed production |
| Decision fit | Coding and Long context | Classification and JSON / Tool use |
| Context window | 200k | 33k |
| Cheapest output | - | $0.13/1M tokens |
| Provider routes | 0 tracked | 5 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Codex Mini Latest has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags Codex Mini Latest for Coding and Long context.
- Gemma 3 12B has broader tracked provider coverage for fallback and route flexibility.
- Gemma 3 12B uniquely exposes Structured outputs in local model data.
- Local decision data tags Gemma 3 12B for Classification and JSON / Tool use.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Codex Mini Latest
Unavailable
No complete token price in local provider data
Gemma 3 12B
$64.50
Cheapest tracked route/tier: OpenRouter
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Codex Mini Latest and Gemma 3 12B; plan for SDK, billing, or endpoint changes.
- Gemma 3 12B adds Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Gemma 3 12B and Codex Mini Latest; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Structured outputs before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-05-16 | 2026-01-01 |
| Context window | 200k | 33k |
| Parameters | — | 12B |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Gemma |
| Openness | Proprietary | Open weights |
| Weights | Not released | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2024-06 | 2024-08 |
Pricing and availability
| Pricing attribute | Codex Mini Latest | Gemma 3 12B |
|---|---|---|
| Input price | - | $0.04/1M tokens |
| Output price | - | $0.13/1M tokens |
| Providers | - |
Capabilities
| Capability | Codex Mini Latest | Gemma 3 12B |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| JSON / Tool use | No | No |
| Structured outputs | No | 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.