GPT-4 Turbo Preview vs Llama 3.1 Swallow 8B Instruct
GPT-4 Turbo Preview (2023) and Llama 3.1 Swallow 8B Instruct (2025) are compact production models from OpenAI and Tokyo Institute of Technology. GPT-4 Turbo Preview ships a 128k-token context window, while Llama 3.1 Swallow 8B Instruct ships a 4k-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.
GPT-4 Turbo Preview fits 32x more tokens; pick it for long-context work and Llama 3.1 Swallow 8B Instruct for tighter calls.
Decision scorecard
Local evidence first| Signal | GPT-4 Turbo Preview | Llama 3.1 Swallow 8B Instruct |
|---|---|---|
| Best for | multimodal apps and provider-routed production | general production evaluation |
| Decision fit | Coding, RAG, and Agents | General |
| Context window | 128k | 4k |
| Cheapest output | $30/1M tokens | - |
| Provider routes | 3 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- GPT-4 Turbo Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- GPT-4 Turbo Preview has broader tracked provider coverage for fallback and route flexibility.
- GPT-4 Turbo Preview uniquely exposes Vision, Structured outputs, and Code execution in local model data.
- Local decision data tags GPT-4 Turbo Preview for Coding, RAG, and Agents.
- Use Llama 3.1 Swallow 8B Instruct when your own prompt tests beat the comparison signals; the local data does not show a decisive standalone advantage yet.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
GPT-4 Turbo Preview
$15,500
Cheapest tracked route/tier: OpenAI API
Llama 3.1 Swallow 8B Instruct
Unavailable
No complete token price in local provider data
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for GPT-4 Turbo Preview and Llama 3.1 Swallow 8B Instruct; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision, Structured outputs, and Code execution before moving production traffic.
- No overlapping tracked provider route is sourced for Llama 3.1 Swallow 8B Instruct and GPT-4 Turbo Preview; plan for SDK, billing, or endpoint changes.
- GPT-4 Turbo Preview adds Vision, Structured outputs, and Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2023-11-06 | 2025-01-01 |
| Context window | 128k | 4k |
| Parameters | 1.76T (8x222B MoE)* | 8B |
| Architecture | Mixture of Experts | Decoder Only |
| License | Proprietary | Llama 2 Community |
| Openness | Proprietary | Open weights |
| Weights | Not released | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2023-12 | 2023 |
Pricing and availability
| Pricing attribute | GPT-4 Turbo Preview | Llama 3.1 Swallow 8B Instruct |
|---|---|---|
| Input price | $10/1M tokens | - |
| Output price | $30/1M tokens | - |
| Providers |
Capabilities
| Capability | GPT-4 Turbo Preview | Llama 3.1 Swallow 8B Instruct |
|---|---|---|
| Vision | Yes | No |
| Multimodal | No | No |
| Reasoning | No | No |
| JSON / Tool use | No | No |
| Structured outputs | Yes | No |
| Code execution | Yes | 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: 2026-06-30. Data sourced from public model cards and provider documentation.