Compare the listed model data for Anthropic Claude Sonnet 4.6 by Anthropic and Anthropic Claude Sonnet 4.5 by Anthropic. Benchmark and pricing records are not a controlled test and may change.
Data last updated: 2026-10-16. Verify current model details with each provider.
Anthropic Claude Sonnet 4.6: 200K tokens; Anthropic Claude Sonnet 4.5: 200K tokens. The listed context-window values are equal. Anthropic Claude Sonnet 4.6 is listed for coding, reasoning, vision, multimodal input, agentic workflows, long-context tasks; Anthropic Claude Sonnet 4.5 is listed for coding, reasoning, vision, multimodal input, agentic workflows, long-context tasks. Shared catalog benchmark entries: MMLU: Anthropic Claude Sonnet 4.6 88.7%; Anthropic Claude Sonnet 4.5 87.9%; HumanEval: Anthropic Claude Sonnet 4.6 85.4%; Anthropic Claude Sonnet 4.5 84.1%; GPQA: Anthropic Claude Sonnet 4.6 65.2%; Anthropic Claude Sonnet 4.5 62.7%; SWE-bench Verified: Anthropic Claude Sonnet 4.6 49.0%; Anthropic Claude Sonnet 4.5 45.8%. These records are reference data, not a controlled head-to-head test; verify current pricing and specifications with each provider.
Use these model and provider links to verify current specifications, pricing, and availability.
Using only the catalog's listed per-million-token rates, 1M input plus 1M output tokens costs about $18 for Anthropic Claude Sonnet 4.6 and $18 for Anthropic Claude Sonnet 4.5. This excludes provider-specific discounts, caching, and other fees.
Choose Anthropic Claude Sonnet 4.6 when your task aligns with catalog-listed uses or strengths such as Everyday professional coding: code review, bug fixing, feature implementation, Business writing: reports, emails, proposals, and documentation at volume, Customer support automation requiring nuanced, accurate responses, Research summarization and information extraction from documents.
Choose Anthropic Claude Sonnet 4.5 when your task aligns with catalog-listed uses or strengths such as Production chatbots and customer service requiring consistent quality at volume, Everyday coding assistance: feature development, bug fixing, code review, Business communication automation: emails, reports, and documentation, Educational applications requiring accurate, safe, and engaging responses.
Claude Sonnet 4.6 — Anthropic's fast, balanced model. High intelligence with low latency for everyday tasks and production use.
Parameters: ~70B (balanced tier, exact size proprietary)
Context: 200K tokens
Catalog pricing: Via LITHOVEX AI free. Anthropic API: mid-tier.
Claude Sonnet 4.5 — fast and capable everyday model by Anthropic, balancing speed and intelligence for production use.
Parameters: ~70B (balanced tier, exact size proprietary)
Context: 200K tokens
Catalog pricing: Via LITHOVEX AI free.
| Specification | Anthropic Claude Sonnet 4.6 | Anthropic Claude Sonnet 4.5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Parameters | ~70B (balanced tier, exact size proprietary) | ~70B (balanced tier, exact size proprietary) |
| Context window | 200K tokens | 200K tokens |
| Maximum output | Not listed | Not listed |
| Catalog pricing | Via LITHOVEX AI free. Anthropic API: mid-tier. | Via LITHOVEX AI free. |
| Listed input/output cost per 1M tokens | input $3, output $15 per 1M tokens | input $3, output $15 per 1M tokens |
| License | Proprietary | Proprietary |
| Coding support | Listed | Listed |
| Reasoning support | Listed | Listed |
| Vision input | Listed | Listed |
| Multimodal | Listed | Listed |
| Open weights | No | No |
| Benchmark: MMLU | 88.7% | 87.9% |
| Benchmark: HumanEval | 85.4% | 84.1% |
| Benchmark: GPQA | 65.2% | 62.7% |
| Benchmark: SWE-bench Verified | 49.0% | 45.8% |
Figures are transcribed from LITHOVEX model records. Benchmark versions and evaluation setups may differ; pricing and specifications can change. Check each provider's current documentation before making a decision.
Read the Anthropic Claude Sonnet 4.6 model profile and Anthropic Claude Sonnet 4.5 model profile, or browse the model directory.