Gemini 1.5 Flash Experimental 0827 vs Llama 3.1 405B Instruct
Gemini 1.5 Flash Experimental 0827 (2024) and Llama 3.1 405B Instruct (2024) are compact production models from Google DeepMind and AI at Meta. Gemini 1.5 Flash Experimental 0827 ships a not-yet-sourced context window, while Llama 3.1 405B Instruct ships a 128K-token context window. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Gemini 1.5 Flash Experimental 0827 is safer overall; choose Llama 3.1 405B Instruct when provider fit matters.
Decision scorecard
Local evidence first| Signal | Gemini 1.5 Flash Experimental 0827 | Llama 3.1 405B Instruct |
|---|---|---|
| Decision fit | General | RAG, Long context, and Classification |
| Context window | — | 128K |
| Cheapest output | - | $2.4/1M tokens |
| Provider routes | 0 tracked | 11 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Use Gemini 1.5 Flash Experimental 0827 when your own prompt tests beat the comparison signals; the local data does not show a decisive standalone advantage yet.
- Llama 3.1 405B Instruct has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Llama 3.1 405B Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Llama 3.1 405B Instruct uniquely exposes Structured outputs in local model data.
- Local decision data tags Llama 3.1 405B Instruct for RAG, Long context, and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Gemini 1.5 Flash Experimental 0827
Unavailable
No complete token price in local provider data
Llama 3.1 405B Instruct
$2,520
Cheapest tracked route: AWS Bedrock
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Gemini 1.5 Flash Experimental 0827 and Llama 3.1 405B Instruct; plan for SDK, billing, or endpoint changes.
- Llama 3.1 405B Instruct adds Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Llama 3.1 405B Instruct and Gemini 1.5 Flash Experimental 0827; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Structured outputs before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-08-27 | 2024-07-23 |
| Context window | — | 128K |
| Parameters | — | 405B |
| Architecture | decoder only | decoder only |
| License | Unknown | Open Source |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Gemini 1.5 Flash Experimental 0827 | Llama 3.1 405B Instruct |
|---|---|---|
| Input price | - | $2.4/1M tokens |
| Output price | - | $2.4/1M tokens |
| Providers | - |
Capabilities
| Capability | Gemini 1.5 Flash Experimental 0827 | Llama 3.1 405B Instruct |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | Yes |
| Code execution | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on structured outputs: Llama 3.1 405B Instruct. 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 Llama 3.1 405B Instruct has $2.4/1M input tokens. Provider availability is 0 tracked routes versus 11. 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 provider fit are central to the workload. Choose Llama 3.1 405B Instruct when provider fit and broader provider choice 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
Is Gemini 1.5 Flash Experimental 0827 or Llama 3.1 405B Instruct open source?
Gemini 1.5 Flash Experimental 0827 is listed under Unknown. Llama 3.1 405B Instruct is listed under Open Source. 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 structured outputs, Gemini 1.5 Flash Experimental 0827 or Llama 3.1 405B Instruct?
Llama 3.1 405B Instruct has the clearer documented structured outputs signal in this comparison. If structured outputs is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Gemini 1.5 Flash Experimental 0827 and Llama 3.1 405B Instruct?
Gemini 1.5 Flash Experimental 0827 is available on the tracked providers still being sourced. Llama 3.1 405B Instruct is available on OctoAI API (Deprecated), Together AI, Fireworks AI, IBM watsonx, and Scale AI GenAI Platform. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Gemini 1.5 Flash Experimental 0827 over Llama 3.1 405B Instruct?
Gemini 1.5 Flash Experimental 0827 is safer overall; choose Llama 3.1 405B Instruct when provider fit matters. If your workload also depends on provider fit, start with Gemini 1.5 Flash Experimental 0827; if it depends on provider fit, run the same evaluation with Llama 3.1 405B Instruct.
Continue comparing
Last reviewed: 2026-05-16. Data sourced from public model cards and provider documentation.