Compare the listed model data for Anthropic Claude Opus 4.8 by Anthropic and OpenAI GPT-5.4 by OpenAI. 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 Opus 4.8: 200K tokens; OpenAI GPT-5.4: 128K tokens. Anthropic Claude Opus 4.8 has the larger listed context window. Anthropic Claude Opus 4.8 is listed for coding, reasoning, vision, multimodal input, agentic workflows, long-context tasks; OpenAI GPT-5.4 is listed for coding, reasoning, vision, multimodal input, agentic workflows, long-context tasks. Shared catalog benchmark entries: MMLU: Anthropic Claude Opus 4.8 92.1%; OpenAI GPT-5.4 91.8%; HumanEval: Anthropic Claude Opus 4.8 90.5%; OpenAI GPT-5.4 92.4%. 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 $36 for Anthropic Claude Opus 4.8 and $12.5 for OpenAI GPT-5.4. This excludes provider-specific discounts, caching, and other fees.
Choose Anthropic Claude Opus 4.8 when your task aligns with catalog-listed uses or strengths such as Complex enterprise analysis requiring maximum accuracy: financial modeling, legal review, scientific research, Long-document processing: contracts, research papers, technical specifications up to 200K tokens, Agentic software engineering: autonomous multi-file codebase changes and complex debugging, Graduate-level academic and scientific reasoning requiring deep domain knowledge.
Choose OpenAI GPT-5.4 when your task aligns with catalog-listed uses or strengths such as General professional coding, writing, and analysis at scale, Content creation: marketing copy, blog posts, product descriptions, Customer-facing chatbots requiring reliable, broad-knowledge responses, Educational tutoring and learning assistance applications.
Anthropic's most powerful model ever. Deeper reasoning, stronger agentic coding, superior design sense, and sharper analytical precision than Opus 4.7.
Parameters: ~200B+ (frontier MoE, exact size proprietary)
Context: 200K tokens
Catalog pricing: Access via LITHOVEX AI free. Anthropic API: high-tier pricing.
OpenAI GPT-5.4 — highly capable general-purpose model with strong reasoning, code generation, and multimodal understanding.
Parameters: ~175B+ (standard tier, exact size proprietary)
Context: 128K tokens
Catalog pricing: Via LITHOVEX AI free. OpenAI API: premium pricing.
| Specification | Anthropic Claude Opus 4.8 | OpenAI GPT-5.4 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Parameters | ~200B+ (frontier MoE, exact size proprietary) | ~175B+ (standard tier, exact size proprietary) |
| Context window | 200K tokens | 128K tokens |
| Maximum output | Not listed | Not listed |
| Catalog pricing | Access via LITHOVEX AI free. Anthropic API: high-tier pricing. | Via LITHOVEX AI free. OpenAI API: premium pricing. |
| Listed input/output cost per 1M tokens | input $6, output $30 per 1M tokens | input $2.5, output $10 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 | 92.1% | 91.8% |
| Benchmark: HumanEval | 90.5% | 92.4% |
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 Opus 4.8 model profile and OpenAI GPT-5.4 model profile, or browse the model directory.