Doubao Pro 256K vs Llama Guard 2 8B
Doubao Pro 256K (2024) and Llama Guard 2 8B (2024) are compact production models from ByteDance and AI at Meta. Doubao Pro 256K ships a 256k-token context window, while Llama Guard 2 8B ships a 8k-token context window. On pricing, Llama Guard 2 8B costs $0.05/1M input tokens versus $0.73/1M 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.
Llama Guard 2 8B is ~1370% cheaper at $0.05/1M; pay for Doubao Pro 256K only for long-context analysis.
Decision scorecard
Local evidence first| Signal | Doubao Pro 256K | Llama Guard 2 8B |
|---|---|---|
| Best for | general production evaluation | provider-routed production |
| Decision fit | Long context | Classification |
| Context window | 256k | 8k |
| Cheapest output | $1.32/1M tokens | $0.25/1M tokens |
| Provider routes | 1 tracked | 3 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Doubao Pro 256K has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags Doubao Pro 256K for Long context.
- Llama Guard 2 8B has the lower cheapest tracked output price at $0.25/1M tokens.
- Llama Guard 2 8B has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Llama Guard 2 8B for Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Doubao Pro 256K
$919
Cheapest tracked route/tier: Volcengine
Llama Guard 2 8B
$103
Cheapest tracked route/tier: Replicate API
Estimated monthly gap: $817. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Doubao Pro 256K and Llama Guard 2 8B; plan for SDK, billing, or endpoint changes.
- Llama Guard 2 8B is $1.07/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- No overlapping tracked provider route is sourced for Llama Guard 2 8B and Doubao Pro 256K; plan for SDK, billing, or endpoint changes.
- Doubao Pro 256K is $1.07/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-05-15 | 2024-04-18 |
| Context window | 256k | 8k |
| Parameters | — | 8B |
| Architecture | decoder only | decoder only |
| License | Proprietary | Llama 2 Community |
| Openness | Proprietary | Open weights |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | - | 2023-03 |
Pricing and availability
| Pricing attribute | Doubao Pro 256K | Llama Guard 2 8B |
|---|---|---|
| Input price | $0.73/1M tokens | $0.05/1M tokens |
| Output price | $1.32/1M tokens | $0.25/1M tokens |
| Providers |
Capabilities
| Capability | Doubao Pro 256K | Llama Guard 2 8B |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | No |
| Code execution | No | No |
| 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 is close: both models cover the core production surface. That makes context budget, benchmark fit, and provider maturity more important than a simple checklist. If your application depends on one integration detail, verify it against the provider route you plan to use, not just the base model listing.
For cost, Doubao Pro 256K lists $0.73/1M input and $1.32/1M output tokens on the cheapest tracked provider, while Llama Guard 2 8B lists $0.05/1M input and $0.25/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Llama Guard 2 8B lower by about $0.80 per million blended tokens. Availability is 1 providers versus 3, so concentration risk also matters.
Choose Doubao Pro 256K when long-context analysis and larger context windows are central to the workload. Choose Llama Guard 2 8B 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. 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.
FAQ
Which has a larger context window, Doubao Pro 256K or Llama Guard 2 8B?
Doubao Pro 256K supports 256k tokens, while Llama Guard 2 8B 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, Doubao Pro 256K or Llama Guard 2 8B?
Llama Guard 2 8B is cheaper on tracked token pricing. Doubao Pro 256K costs $0.73/1M input and $1.32/1M output tokens. Llama Guard 2 8B costs $0.05/1M input and $0.25/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Doubao Pro 256K or Llama Guard 2 8B open source?
Doubao Pro 256K is listed under Proprietary. Llama Guard 2 8B is listed under Llama 2 Community. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Where can I run Doubao Pro 256K and Llama Guard 2 8B?
Doubao Pro 256K is available on Volcengine. Llama Guard 2 8B is available on Fireworks AI, OctoAI API (Deprecated), and Replicate API. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Doubao Pro 256K over Llama Guard 2 8B?
Llama Guard 2 8B is ~1370% cheaper at $0.05/1M; pay for Doubao Pro 256K only for long-context analysis. If your workload also depends on long-context analysis, start with Doubao Pro 256K; if it depends on provider fit, run the same evaluation with Llama Guard 2 8B.
Continue comparing
Last reviewed: 2026-05-02. Data sourced from public model cards and provider documentation.