Gemini 2.5 Flash Live API vs Llama 3.1 405B Instruct
Gemini 2.5 Flash Live API (2025) and Llama 3.1 405B Instruct (2024) are compact production models from Google DeepMind and AI at Meta. Gemini 2.5 Flash Live API ships a 128k-token context window, while Llama 3.1 405B Instruct 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 2.5 Flash Live API is ~380% cheaper at $0.50/1M; pay for Llama 3.1 405B Instruct only for provider fit.
Decision scorecard
Local evidence first| Signal | Gemini 2.5 Flash Live API | Llama 3.1 405B Instruct |
|---|---|---|
| Best for | multimodal apps and tool-calling agents | provider-routed production |
| Decision fit | RAG, Agents, and Long context | RAG, Long context, and Classification |
| Context window | 128k | 128k |
| Cheapest output | $2/1M tokens | $2.40/1M tokens |
| Provider routes | 1 tracked | 11 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Gemini 2.5 Flash Live API has the lower cheapest tracked output price at $2/1M tokens.
- Gemini 2.5 Flash Live API uniquely exposes Vision, Multimodal, and JSON / Tool use in local model data.
- Local decision data tags Gemini 2.5 Flash Live API for RAG, Agents, and Long context.
- Llama 3.1 405B Instruct has broader tracked provider coverage for fallback and route 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 route or tier on this page.
Gemini 2.5 Flash Live API
$900
Cheapest tracked route/tier: Google AI Studio
Llama 3.1 405B Instruct
$2,520
Cheapest tracked route/tier: AWS Bedrock
Estimated monthly gap: $1,620. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Gemini 2.5 Flash Live API and Llama 3.1 405B Instruct; plan for SDK, billing, or endpoint changes.
- Llama 3.1 405B Instruct is $0.40/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Vision, Multimodal, and JSON / Tool use before moving production traffic.
- 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 2.5 Flash Live API; plan for SDK, billing, or endpoint changes.
- Gemini 2.5 Flash Live API is $0.40/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Structured outputs before moving production traffic.
- Gemini 2.5 Flash Live API adds Vision, Multimodal, and JSON / Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-12-01 | 2024-07-23 |
| Context window | 128k | 128k |
| Parameters | — | 405B |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Llama 3 Community |
| Openness | Proprietary | Open weights |
| Weights | Not released | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2025-01 | 2023-12 |
Pricing and availability
| Pricing attribute | Gemini 2.5 Flash Live API | Llama 3.1 405B Instruct |
|---|---|---|
| Input price | $0.50/1M tokens | $2.40/1M tokens |
| Output price | $2/1M tokens | $2.40/1M tokens |
| Providers |
Capabilities
| Capability | Gemini 2.5 Flash Live API | Llama 3.1 405B Instruct |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | No | No |
| JSON / Tool use | Yes | 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: 2026-07-11. Data sourced from public model cards and provider documentation.