LLM Reference

Gemini 1.5 Flash Experimental 0827 vs Phi-4 Mini Reasoning

Gemini 1.5 Flash Experimental 0827 (2024) and Phi-4 Mini Reasoning (2026) are frontier reasoning models from Google DeepMind and Microsoft Research. Gemini 1.5 Flash Experimental 0827 ships a 1m-token context window, while Phi-4 Mini Reasoning ships a 128k-token context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Gemini 1.5 Flash Experimental 0827 fits 8x more tokens; pick it for long-context work and Phi-4 Mini Reasoning for tighter calls.

Decision scorecard

Local evidence first
SignalGemini 1.5 Flash Experimental 0827Phi-4 Mini Reasoning
Best forlong-context analysisreasoning-heavy apps
Decision fitLong contextLong context
Context window1m128k
Cheapest output--
Provider routes0 tracked0 tracked
Shared benchmarks0 shared0 shared

Decision tradeoffs

Choose Gemini 1.5 Flash Experimental 0827 when...
  • Gemini 1.5 Flash Experimental 0827 has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • Local decision data tags Gemini 1.5 Flash Experimental 0827 for Long context.
Choose Phi-4 Mini Reasoning when...
  • Phi-4 Mini Reasoning uniquely exposes Reasoning in local model data.
  • Local decision data tags Phi-4 Mini Reasoning for Long context.

Monthly cost at traffic

Estimate token spend from the cheapest tracked input and output route or tier on this page.

Gemini 1.5 Flash Experimental 0827

Unavailable

No complete token price in local provider data

Phi-4 Mini Reasoning

Unavailable

No complete token price in local provider data

Cost delta unavailable until both models have sourced input and output token prices.

Switch friction

Gemini 1.5 Flash Experimental 0827 -> Phi-4 Mini Reasoning
  • No overlapping tracked provider route is sourced for Gemini 1.5 Flash Experimental 0827 and Phi-4 Mini Reasoning; plan for SDK, billing, or endpoint changes.
  • Phi-4 Mini Reasoning adds Reasoning in local capability data.
Phi-4 Mini Reasoning -> Gemini 1.5 Flash Experimental 0827
  • No overlapping tracked provider route is sourced for Phi-4 Mini Reasoning and Gemini 1.5 Flash Experimental 0827; plan for SDK, billing, or endpoint changes.
  • Check replacement coverage for Reasoning before moving production traffic.

Specs

Specification
Released2024-08-272026-05-16
Context window1m128k
Parameters3.8B
ArchitectureDecoder Only-
LicenseProprietaryMITOSI-approved
OpennessProprietaryOpen source
Commercial useCommercial use: conditionalCommercial use: permitted
Knowledge cutoff-2025-02

Pricing and availability

Pricing attributeGemini 1.5 Flash Experimental 0827Phi-4 Mini Reasoning
Input price--
Output price--
Providers--

Pricing not yet sourced for either model.

Capabilities

CapabilityGemini 1.5 Flash Experimental 0827Phi-4 Mini Reasoning
VisionNoNo
MultimodalNoNo
ReasoningNoYes
Function callingNoNo
Tool useNoNo
Structured outputsNoNo
Code executionNoNo
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

No shared benchmark scores are currently available for this pair.

Deep dive

The capability footprint differs most on reasoning mode: Phi-4 Mini Reasoning. Both models share the core language-model surface, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.

Pricing coverage is uneven: Gemini 1.5 Flash Experimental 0827 has no token price sourced yet and Phi-4 Mini Reasoning has no token price sourced yet. Provider availability is 0 tracked routes versus 0. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.

Choose Gemini 1.5 Flash Experimental 0827 when long-context analysis and larger context windows are central to the workload. Choose Phi-4 Mini Reasoning when reasoning depth are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency. For teams standardizing a stack, that distinction is often the difference between a benchmark win and a reliable deployment.

FAQ

Which has a larger context window, Gemini 1.5 Flash Experimental 0827 or Phi-4 Mini Reasoning?

Gemini 1.5 Flash Experimental 0827 supports 1m tokens, while Phi-4 Mini Reasoning supports 128k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.

Is Gemini 1.5 Flash Experimental 0827 or Phi-4 Mini Reasoning open source?

Gemini 1.5 Flash Experimental 0827 is listed under Proprietary. Phi-4 Mini Reasoning is listed under MIT. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.

Which is better for reasoning mode, Gemini 1.5 Flash Experimental 0827 or Phi-4 Mini Reasoning?

Phi-4 Mini Reasoning has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.

When should I pick Gemini 1.5 Flash Experimental 0827 over Phi-4 Mini Reasoning?

Gemini 1.5 Flash Experimental 0827 fits 8x more tokens; pick it for long-context work and Phi-4 Mini Reasoning for tighter calls. If your workload also depends on long-context analysis, start with Gemini 1.5 Flash Experimental 0827; if it depends on reasoning depth, run the same evaluation with Phi-4 Mini Reasoning.

Continue comparing

Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.