Together AI - Llama 3 8B Lite vs o3-pro
Together AI - Llama 3 8B Lite (2025) and o3-pro (2025) are frontier reasoning models from AI at Meta and OpenAI. Together AI - Llama 3 8B Lite ships a 8k-token context window, while o3-pro ships a 200k-token context window. On pricing, Together AI - Llama 3 8B Lite costs $0.10/1M input tokens versus $20/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Together AI - Llama 3 8B Lite is ~19900% cheaper at $0.10/1M; pay for o3-pro only for coding workflow support.
Decision scorecard
Local evidence first| Signal | Together AI - Llama 3 8B Lite | o3-pro |
|---|---|---|
| Best for | tool-calling agents | reasoning-heavy apps, multimodal apps, and tool-calling agents |
| Decision fit | Agents, Classification, and JSON / Tool use | Coding, RAG, and Agents |
| Context window | 8k | 200k |
| Cheapest output | $0.10/1M tokens | $80/1M tokens |
| Provider routes | 1 tracked | 3 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Together AI - Llama 3 8B Lite has the lower cheapest tracked output price at $0.10/1M tokens.
- Local decision data tags Together AI - Llama 3 8B Lite for Agents, Classification, and JSON / Tool use.
- o3-pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- o3-pro has broader tracked provider coverage for fallback and procurement flexibility.
- o3-pro uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags o3-pro for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Together AI - Llama 3 8B Lite
$105
Cheapest tracked route/tier: Together AI
o3-pro
$36,000
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $35,895. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Together AI - Llama 3 8B Lite and o3-pro; plan for SDK, billing, or endpoint changes.
- o3-pro is $79.90/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- o3-pro adds Vision, Multimodal, and Reasoning in local capability data.
- No overlapping tracked provider route is sourced for o3-pro and Together AI - Llama 3 8B Lite; plan for SDK, billing, or endpoint changes.
- Together AI - Llama 3 8B Lite is $79.90/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-07-15 | 2025-06-10 |
| Context window | 8k | 200k |
| Parameters | 8B | — |
| Architecture | decoder only | decoder only |
| License | Llama 3 Community | Proprietary |
| Openness | Open weights | Proprietary |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | 2024-03 | 2025-08 |
Pricing and availability
| Pricing attribute | Together AI - Llama 3 8B Lite | o3-pro |
|---|---|---|
| Input price | $0.10/1M tokens | $20/1M tokens |
| Output price | $0.10/1M tokens | $80/1M tokens |
| Providers |
Capabilities
| Capability | Together AI - Llama 3 8B Lite | o3-pro |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | Yes |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | Yes |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: o3-pro, multimodal input: o3-pro, reasoning mode: o3-pro, and code execution: o3-pro. Both models share function calling, tool use, and 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, Together AI - Llama 3 8B Lite lists $0.10/1M input and $0.10/1M output tokens on the cheapest tracked provider, while o3-pro lists $20/1M input and $80/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Together AI - Llama 3 8B Lite lower by about $37.90 per million blended tokens. Availability is 1 providers versus 3, so concentration risk also matters.
Choose Together AI - Llama 3 8B Lite when provider fit and lower input-token cost are central to the workload. Choose o3-pro when coding workflow support, larger context windows, 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, Together AI - Llama 3 8B Lite or o3-pro?
o3-pro supports 200k tokens, while Together AI - Llama 3 8B Lite supports 8k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Together AI - Llama 3 8B Lite or o3-pro?
Together AI - Llama 3 8B Lite is cheaper on tracked token pricing. Together AI - Llama 3 8B Lite costs $0.10/1M input and $0.10/1M output tokens. o3-pro costs $20/1M input and $80/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Together AI - Llama 3 8B Lite or o3-pro open source?
Together AI - Llama 3 8B Lite is listed under Llama 3 Community. o3-pro is listed under Proprietary. 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, Together AI - Llama 3 8B Lite or o3-pro?
o3-pro 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. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, Together AI - Llama 3 8B Lite or o3-pro?
o3-pro 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 Together AI - Llama 3 8B Lite and o3-pro?
Together AI - Llama 3 8B Lite is available on Together AI. o3-pro is available on OpenRouter, OpenAI API, and Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.