ModelRefs / GPT-4.1 Mini - AI model implementation reference

GPT-4.1 Mini - AI model implementation reference

GPT-4.1 Mini is a deprecated OpenAI model, the smaller hosted member of the GPT-4.1 API family. OpenAI's deprecations page gives the gpt-4.1-mini-2025-04-14 snapshot a shutdown date of 14 January 2027, with gpt-6-luna as the recommended replacement. It remains relevant where teams need the family's instruction-following, coding, tool, and long-input surface at a different cost, latency, and quality trade-off from GPT-4.1.

Overview

GPT-4.1 Mini is attributed to OpenAI in ModelRefs' canonical registry. Tracked modalities: Text input and output, Image input. Primary use cases considered on ModelRefs: High-volume structured language processing; Coding assistance and tool-driven workflows with measured quality targets.

This ModelRefs profile is decision-support material, not a final or universal ranking. Confirm current behavior, access, pricing, limits, licensing, and lifecycle in OpenAI's own documentation, and evaluate GPT-4.1 Mini on representative workloads before implementation.

Lifecycle

Deprecated. Still served, but the provider has scheduled its retirement.

Stops serving
14 January 2027
Provider's replacement
gpt-6-luna

Provider-documented snapshots

  • gpt-4.1-mini-2025-04-14

Source: developers.openai.com, checked 2026-10-16.

Benchmark & Evaluation

ModelRefs currently has partial, narrow benchmark coverage for GPT-4.1 Mini. Treat the available benchmark evidence as one input to the decision, not a guarantee that GPT-4.1 Mini is the strongest option for your workload, and evaluate it on representative workloads before selecting it.

  • Provider-reported benchmark results should be interpreted with methodology, dataset, prompting, tool, sampling, and recency limitations in mind.
  • G.18 registers OpenAI's source-scoped simple-evals GPQA result for gpt-4.1-mini-2025-04-14. It supports Partial eligibility only and is not transferred to other GPT-4.1 variants.

Implementation considerations

  • Benchmark the mini variant directly; family-level claims do not establish parity with GPT-4.1.
  • Pin model snapshots and test structured-output, tool, and long-input failure modes.
  • Hosted through eligible OpenAI API endpoints.
  • Deprecated with a scheduled shutdown of 14 January 2027 for gpt-4.1-mini-2025-04-14; verify endpoint support, quotas, and rates before any remaining rollout.

Risks and limitations

  • Outputs can be incorrect or unsuitable for the intended task; use task-specific evaluation, grounding, and human review where consequences are material.
  • API availability, model aliases, rate limits, data controls, regions, and prices are mutable and differ by product channel.

Source coverage

ModelRefs reviewed OpenAI's published material on 2026-06-29. Model behavior, access, pricing, limits, and lifecycle can change, so verify the linked provider documentation before implementation. What remains open is recorded on this page: Independent reproduction and canonical run metadata for variant-specific evaluations are incomplete. Fit and comparison signals remain provisional until tested on your own workload.

Connected ModelRefs evidence

Sources

Continue your research

Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to GPT-4.1 Mini - AI model implementation reference.