GPT-5.2 vs Llama 2 13B Chat
GPT-5.2 (2025) and Llama 2 13B Chat (2023) are frontier reasoning models from OpenAI and AI at Meta. GPT-5.2 ships a 400k-token context window, while Llama 2 13B Chat ships a 4k-token context window. On pricing, Llama 2 13B Chat costs $0.10/1M input tokens versus $1.75/1M 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 2 13B Chat is ~1650% cheaper at $0.10/1M; pay for GPT-5.2 only for coding workflow support.
Decision scorecard
Local evidence first| Signal | GPT-5.2 | Llama 2 13B Chat |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, Classification, and JSON / Tool use |
| Context window | 400k | 4k |
| Cheapest output | $14/1M tokens | $0.50/1M tokens |
| Provider routes | 3 tracked | 11 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- GPT-5.2 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- GPT-5.2 uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags GPT-5.2 for Coding, RAG, and Agents.
- Llama 2 13B Chat has the lower cheapest tracked output price at $0.50/1M tokens.
- Llama 2 13B Chat has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Llama 2 13B Chat for Coding, Classification, and JSON / Tool use.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
GPT-5.2
$4,900
Cheapest tracked route/tier: Replicate API
Llama 2 13B Chat
$205
Cheapest tracked route/tier: Replicate API
Estimated monthly gap: $4,695. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on Replicate API; start route-level A/B tests there.
- Llama 2 13B Chat is $13.50/1M 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.
- Provider overlap exists on Replicate API; start route-level A/B tests there.
- GPT-5.2 is $13.50/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- GPT-5.2 adds Vision, Multimodal, and Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-12-11 | 2023-07-18 |
| Context window | 400k | 4k |
| Parameters | — | 13B |
| 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 | 2025-08 | 2022-09 |
Pricing and availability
| Pricing attribute | GPT-5.2 | Llama 2 13B Chat |
|---|---|---|
| Input price | $1.75/1M tokens | $0.10/1M tokens |
| Output price | $14/1M tokens | $0.50/1M tokens |
| Providers |
Capabilities
| Capability | GPT-5.2 | Llama 2 13B Chat |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | Yes | Yes |
| Code execution | Yes | 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 differs most on vision: GPT-5.2, multimodal input: GPT-5.2, reasoning mode: GPT-5.2, function calling: GPT-5.2, tool use: GPT-5.2, and code execution: GPT-5.2. 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, GPT-5.2 lists $1.75/1M input and $14/1M output tokens on the cheapest tracked provider, while Llama 2 13B Chat lists $0.10/1M input and $0.50/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Llama 2 13B Chat lower by about $5.21 per million blended tokens. Availability is 3 providers versus 11, so concentration risk also matters.
Choose GPT-5.2 when coding workflow support and larger context windows are central to the workload. Choose Llama 2 13B Chat 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.
FAQ
Which has a larger context window, GPT-5.2 or Llama 2 13B Chat?
GPT-5.2 supports 400k tokens, while Llama 2 13B Chat supports 4k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, GPT-5.2 or Llama 2 13B Chat?
Llama 2 13B Chat is cheaper on tracked token pricing. GPT-5.2 costs $1.75/1M input and $14/1M output tokens. Llama 2 13B Chat costs $0.10/1M input and $0.50/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is GPT-5.2 or Llama 2 13B Chat open source?
GPT-5.2 is listed under Proprietary. Llama 2 13B Chat 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.
Which is better for vision, GPT-5.2 or Llama 2 13B Chat?
GPT-5.2 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, GPT-5.2 or Llama 2 13B Chat?
GPT-5.2 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 GPT-5.2 and Llama 2 13B Chat?
GPT-5.2 is available on Replicate API, OpenRouter, and Vercel AI Gateway. Llama 2 13B Chat is available on Alibaba Cloud PAI-EAS, AWS Bedrock, Microsoft Foundry, GCP Vertex AI, and DeepInfra. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.