Claude 3.5 Sonnet vs Llama 3.3 70B
Claude 3.5 Sonnet (2024) and Llama 3.3 70B (2025) are frontier reasoning models from Anthropic and AI at Meta. Claude 3.5 Sonnet ships a 200k-token context window, while Llama 3.3 70B ships a 8k-token context window. On MMLU PRO, Claude 3.5 Sonnet leads by 5.9 pts. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Llama 3.3 70B is ~233% cheaper at $0.90/1M; pay for Claude 3.5 Sonnet only for coding workflow support.
Decision scorecard
Local evidence first| Signal | Claude 3.5 Sonnet | Llama 3.3 70B |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | multimodal apps and tool-calling agents |
| Decision fit | Coding, RAG, and Agents | Agents, Vision, and Classification |
| Context window | 200k | 8k |
| Cheapest output | $15/1M tokens | $0.90/1M tokens |
| Provider routes | 6 tracked | 1 tracked |
| Shared benchmarks | MMLU PRO leader | 1 shared |
Decision tradeoffs
- Claude 3.5 Sonnet holds a shared-benchmark lead on MMLU PRO, ahead by 5.9 points.
- Claude 3.5 Sonnet has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Claude 3.5 Sonnet has broader tracked provider coverage for fallback and route flexibility.
- Claude 3.5 Sonnet uniquely exposes Reasoning, Structured outputs, and Code execution in local model data.
- Local decision data tags Claude 3.5 Sonnet for Coding, RAG, and Agents.
- Llama 3.3 70B has the lower cheapest tracked output price at $0.90/1M tokens.
- Local decision data tags Llama 3.3 70B for Agents, Vision, and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Claude 3.5 Sonnet
$6,150
Cheapest tracked route/tier: GCP Vertex AI
Llama 3.3 70B
$945
Cheapest tracked route/tier: Fireworks AI
Estimated monthly gap: $5,205. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Claude 3.5 Sonnet and Llama 3.3 70B; plan for SDK, billing, or endpoint changes.
- Llama 3.3 70B is $14.10/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning, Structured outputs, and Code execution before moving production traffic.
- No overlapping tracked provider route is sourced for Llama 3.3 70B and Claude 3.5 Sonnet; plan for SDK, billing, or endpoint changes.
- Claude 3.5 Sonnet is $14.10/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Claude 3.5 Sonnet adds Reasoning, Structured outputs, and Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-06-20 | 2025-12-09 |
| Context window | 200k | 8k |
| Parameters | 70B | 70B |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Llama 3 Community |
| Openness | Proprietary | Open weights |
| Weights | Not released | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2024-04 | 2024-12 |
Pricing and availability
| Pricing attribute | Claude 3.5 Sonnet | Llama 3.3 70B |
|---|---|---|
| Input price | $3/1M tokens | $0.90/1M tokens |
| Output price | $15/1M tokens | $0.90/1M tokens |
| Providers |
Capabilities
| Capability | Claude 3.5 Sonnet | Llama 3.3 70B |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | Yes | No |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | No |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Claude 3.5 Sonnet | Llama 3.3 70B |
|---|---|---|
| MMLU PRO | 77.2 | 71.3 |
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Last reviewed: 2026-07-26. Data sourced from public model cards and provider documentation.