Gemini 3 Flash Preview vs Llama 3.1 70B Instruct
Gemini 3 Flash Preview (2025) and Llama 3.1 70B Instruct (2024) are compact production models from Google DeepMind and AI at Meta. Gemini 3 Flash Preview ships a 1M-token context window, while Llama 3.1 70B Instruct ships a 128K-token context window. On pricing, Llama 3.1 70B Instruct costs $0.4/1M input tokens versus $0.5/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Gemini 3 Flash Preview fits 8x more tokens; pick it for long-context work and Llama 3.1 70B Instruct for tighter calls.
Decision scorecard
Local evidence first| Signal | Gemini 3 Flash Preview | Llama 3.1 70B Instruct |
|---|---|---|
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Long context |
| Context window | 1M | 128K |
| Cheapest output | $3/1M tokens | $0.4/1M tokens |
| Provider routes | 3 tracked | 11 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Gemini 3 Flash Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Gemini 3 Flash Preview uniquely exposes Vision, Multimodal, and Function calling in local model data.
- Local decision data tags Gemini 3 Flash Preview for Coding, RAG, and Agents.
- Llama 3.1 70B Instruct has the lower cheapest tracked output price at $0.4/1M tokens.
- Llama 3.1 70B Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Llama 3.1 70B Instruct for Coding, RAG, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Gemini 3 Flash Preview
$1,150
Cheapest tracked route: GCP Vertex AI
Llama 3.1 70B Instruct
$420
Cheapest tracked route: Hyperbolic AI Inference
Estimated monthly gap: $730. Batch, cache, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Llama 3.1 70B Instruct is $2.6/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Function calling before moving production traffic.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Gemini 3 Flash Preview is $2.6/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Gemini 3 Flash Preview adds Vision, Multimodal, and Function calling in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-12-17 | 2024-07-23 |
| Context window | 1M | 128K |
| Parameters | — | 70B |
| Architecture | decoder only | decoder only |
| License | Proprietary | Open Source |
| Knowledge cutoff | 2025-01 | - |
Pricing and availability
| Pricing attribute | Gemini 3 Flash Preview | Llama 3.1 70B Instruct |
|---|---|---|
| Input price | $0.5/1M tokens | $0.4/1M tokens |
| Output price | $3/1M tokens | $0.4/1M tokens |
| Providers |
Capabilities
| Capability | Gemini 3 Flash Preview | Llama 3.1 70B Instruct |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | No | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | Yes | Yes |
| Code execution | Yes | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Gemini 3 Flash Preview, multimodal input: Gemini 3 Flash Preview, function calling: Gemini 3 Flash Preview, tool use: Gemini 3 Flash Preview, and code execution: Gemini 3 Flash Preview. Both models share structured outputs, 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.
For cost, Gemini 3 Flash Preview lists $0.5/1M input and $3/1M output tokens, while Llama 3.1 70B Instruct lists $0.4/1M input and $0.4/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Llama 3.1 70B Instruct lower by about $0.85 per million blended tokens. Availability is 3 providers versus 11, so concentration risk also matters.
Choose Gemini 3 Flash Preview when coding workflow support and larger context windows are central to the workload. Choose Llama 3.1 70B Instruct when provider fit, lower input-token cost, 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.
FAQ
Which has a larger context window, Gemini 3 Flash Preview or Llama 3.1 70B Instruct?
Gemini 3 Flash Preview supports 1M tokens, while Llama 3.1 70B Instruct supports 128K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Gemini 3 Flash Preview or Llama 3.1 70B Instruct?
Llama 3.1 70B Instruct is cheaper on tracked token pricing. Gemini 3 Flash Preview costs $0.5/1M input and $3/1M output tokens. Llama 3.1 70B Instruct costs $0.4/1M input and $0.4/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Gemini 3 Flash Preview or Llama 3.1 70B Instruct open source?
Gemini 3 Flash Preview is listed under Proprietary. Llama 3.1 70B 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 vision, Gemini 3 Flash Preview or Llama 3.1 70B Instruct?
Gemini 3 Flash Preview has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, Gemini 3 Flash Preview or Llama 3.1 70B Instruct?
Gemini 3 Flash Preview has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Gemini 3 Flash Preview and Llama 3.1 70B Instruct?
Gemini 3 Flash Preview is available on GCP Vertex AI, OpenRouter, and Google AI Studio. Llama 3.1 70B Instruct is available on OctoAI API (Deprecated), Together AI, Fireworks AI, NVIDIA NIM, and Microsoft Foundry. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.