Claude Opus 4.1 vs Claude Opus 4
Benchmarks, API Token Pricing, Context Window & Speed Comparison
Related topics (12)
Claude Opus 4.1 by Anthropic and Claude Opus 4 by Anthropic represent two of the frontier AI models analyzed in our comprehensive 2026 AI benchmark and LLM comparison. In this head-to-head evaluation, we examine API token pricing, context window specifications, inference speed (tokens per second), and empirical reasoning performance. From a pure economic perspective, both models offer identical input token rates. On output generation, costs are matched. In data-heavy architectures requiring extensive repository or document analysis, both models provide an identical memory horizon with 200K tokens. In latency-sensitive production environments, Claude Opus 4.1 leads in tokens-per-second throughput, making it ideal for real-time conversational agents and high-concurrency workflows. Below is the complete empirical head-to-head breakdown across cost, speed, context, and capability matrices.
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Claude Opus 4.1
Mise à niveau agentiqueun updated Opus version intégrant enhanced agentic refactorisation, inférieur error rates sur multi-outil boucles, et improved mathématique problem solving.
$15.00 / 1M
$75.00 / 1M
200K tokens
74.5%
Claude Opus 4
Raisonneur profondd'Anthropic de référence heavy raisonnement moteur de moyen-2025, spécialement conçu pour multi-hour recherche, dense codebase migrations, et autonome agent planning.
$15.00 / 1M
$75.00 / 1M
200K tokens
72.5%
Différences Clés en un Coup d’Œil
- Both models cost the same under this workload — choose on capability, not price.
- Claude Opus 4.1 is faster at 46 tok/s vs 42 tok/s.
- Claude Opus 4.1 leads on SWE-bench coding (74.5% vs 72.5%).
| Caractéristique | Claude Opus 4.1 | Claude Opus 4 |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 62 | 61 |
Provider | Anthropic | Anthropic |
Input Price Cost per million input tokens | $15.00 / 1M | $15.00 / 1M |
Output Price Cost per million output tokens | $75.00 / 1M | $75.00 / 1M |
Blended Price Weighted 7:2:1 cache:input:output per 1M | $11.55 / 1M | $11.55 / 1M |
Context Window Maximum input + output tokens | 200K tokens~300 A4 pages of text | 200K tokens~300 A4 pages of text |
Max Output Tokens Per single request | 32K | 32K |
Throughput Speed Tokens generated per second | 46 tok/s | 42 tok/s |
SWE-bench Verified Real-world software engineering | 74.5% | 72.5% |
GPQA Diamond Graduate-level reasoning | 74.4% | 73.8% |
Cached Input Price Prompt caching discount per 1M tokens | $1.50 / 1M | $1.50 / 1M |
Qui gagne où ?
At-a-glance decision frameworkScores de Benchmarks Vérifiés
Official evaluation metrics verified by independent third-party research labs.
Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.
Challenging questions created by domain experts to test complex PhD-level reasoning.
Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.
Crowdsourced human preference evaluation based on blind, head-to-head model battles.
Autonomous multi-step tasks executed inside a real command-line terminal environment.
Tokens emitted per second during active generation streaming.
Latence et Temps de Réponse
Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.
Simulateur Interactif de Coût de Tokens
Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.
Claude Opus 4.1 · Strengths & Key Advantages
- Score amélioré de 74,5% sur SWE-bench Verified par rapport à l'Opus 4 original
- plus fiable à long terme outil chains avec reduced intermediate state drift
- Fine-tuned pour agentic terminal navigation et debugging
Considerations & Trade-offs
- Retains le $15/$75 premium coût structure sans significant tarification cuts
- génération débit est slow par rapport à moyen-palier counterparts
Claude Opus 4 · Strengths & Key Advantages
- Exquisite profond conceptual raisonnement et multi-étapes theorem proving
- haut de gamme-palier autonome TerminalBench score (43.2) pour command-line agent tâches
- Remarkable resistance à injection d'invite et hallucination dans élevé-stakes flux de travail
Considerations & Trade-offs
- élevé premium tarification ($15 dans / $75 out par 1M tokens) restricts bulk déploiement
- Substantially supérieur latence et inférieur génération vitesse que Sonnet 4
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | Claude Opus 4.1 | Claude Opus 4 |
|---|---|---|
Cost per Task Estimated USD to finish one task | $16.46 | $16.46 |
Output Tokens / Task Tokens generated per task | 72K | 72K |
Reasoning Tokens / Task Thinking tokens burned per task | 37K | 37K |
Spécifications Techniques
Architecture, release timeline, capabilities, and modalities.
| Caractéristique | Claude Opus 4.1 | Claude Opus 4 |
|---|---|---|
| Official API Model ID (SDK) | claude-opus-4-1-20250801 | claude-opus-4-20250501 |
| API Protocol | Anthropic Messages API + AWS Bedrock + Vertex AI | Anthropic Messages API + AWS Bedrock + Vertex AI |
| Release Date | 2025-08 | 2025-05 |
| Knowledge Cutoff | March 2025 | March 2025 |
| Architecture | Refined Frontier Reasoning Transformer | Dense Frontier Reasoning Transformer |
| Parameters | Confidential | Confidential |
| Enterprise Rate Limits (RPM / TPM) | 4,000 – 10,000 RPM (Tier 4 + Priority Tier) · 800,000 – 2,000,000 TPM | 4,000 – 10,000 RPM (Tier 4 + Priority Tier) · 800,000 – 2,000,000 TPM |
| Long-Context Tier (>128K/200K) | Standard rate up to 200K tokens; 2x input/output tier above 200K tokens | Standard rate up to 200K tokens; 2x input/output tier above 200K tokens |
| Prompt Cache Policy & TTL | $1.5/1M cached read (90% off); 5-min default & 1-hour extended TTL | $1.5/1M cached read (90% off); 5-min default & 1-hour extended TTL |
| Computer Use / GUI Agent | Supported (Screen coordinate grounding, browser & desktop GUI action loops) | Supported (Screen coordinate grounding, browser & desktop GUI action loops) |
| MCP & Parallel Tool Calling | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema |
| Web Search Grounding & Sandbox | Native Web Search Citations + Code Execution Tool + MCP Connectors | Native Web Search Citations + Code Execution Tool + MCP Connectors |
| Official Fine-Tuning Support | Custom Model Tuning via Amazon Bedrock & Prompt Distillation | Custom Model Tuning via Amazon Bedrock & Prompt Distillation |
| Multimodal Token Billing | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) | Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) |
| Quantization & Min GPU VRAM | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) |
| Safety & Frontier Classification | Anthropic RSP ASL-2 / ASL-3 Constitutional Safety Evaluated | Anthropic RSP ASL-2 / ASL-3 Constitutional Safety Evaluated |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier |
| Input Modalities | text, vision | text, vision |
| Output Modalities | text | text |
Claude Opus 4.1 vs Claude Opus 4: Réponses Rapides (FAQ)
Which is more intelligent, Claude Opus 4.1 or Claude Opus 4?
Claude Opus 4.1 is more intelligent. It scores 62 compared with 61 on the composite Intelligence Index.
Which model is faster?
Claude Opus 4.1 is faster, generating 46 tokens per second compared with 42 tokens per second.
Which model has lower latency?
Claude Opus 4.1 has lower latency, with a time to first token of 1.70s compared with 1.80s.
Verdict
Verdict & Model Selection Recommendation: Choose Claude Opus 4.1 if your priority is Automated bug-fixing swarms, complex architecture refactoring, and academic research synthesis. Its performance in demanding tasks justifies its operational token cost. Choose Claude Opus 4 if your workflow prioritizes Deep mathematical analysis, mission-critical autonomous planning, and enterprise code audits. For large-scale batch processing or customer-facing conversational interfaces, its balance of speed and economics delivers superior ROI.
Questions fréquentes
How does Claude Opus 4.1 compare to Claude Opus 4 in API token pricing and cost per token?+
Both Claude Opus 4.1 and Claude Opus 4 share matched API token pricing at $15.00 per 1M input tokens and $75.00 per 1M output tokens. Because their token economics are identical, your selection should be guided by benchmark latency, memory horizon, and reasoning capabilities rather than operational token fees. Both models support prompt caching discounts of up to 90% for repeated prompt prefixes.
Which model has a larger context window: Claude Opus 4.1 or Claude Opus 4?+
Both Claude Opus 4.1 and Claude Opus 4 offer an identical context window of 200K tokens (~150k words). Both architectures provide equal capacity for large document ingestion, multi-file codebases, and extended multi-turn conversation histories.
Which AI model is better for software engineering and coding: Claude Opus 4.1 or Claude Opus 4?+
Claude Opus 4.1 scores 74.5% on SWE-bench Verified while Claude Opus 4 scores 72.5%. For autonomous software engineering and multi-file debugging, Claude Opus 4.1 holds the verified benchmark lead.
What is the difference in reasoning capability and extended thinking between Claude Opus 4.1 and Claude Opus 4?+
Claude Opus 4.1 features native chain-of-thought extended thinking mode with configurable reasoning effort. In contrast, Claude Opus 4 provides chain-of-thought reasoning depth for complex math and science.
How does inference speed (tokens per second) compare between Claude Opus 4.1 and Claude Opus 4?+
Claude Opus 4.1 generates approximately 46 tokens per second, while Claude Opus 4 delivers 42 tokens per second. In latency-sensitive production environments, Claude Opus 4.1 provides faster time-to-first-token (TTFT) and higher streaming response velocity.
Can you implement a tiered LLM routing setup combining Claude Opus 4.1 and Claude Opus 4 to optimize costs?+
Yes! Tiered multi-model routing can optimize for latency and accuracy: you can route high-frequency conversational turns and latency-sensitive queries to Claude Opus 4.1, and route deep architectural or complex reasoning queries to Claude Opus 4.1. This balanced routing strategy maximizes system throughput and answer quality.
Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.
Related reading
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Les scores de benchmarks, tarifs par token et limites évoluent rapidement. Vérifiez toujours les spécifications actuelles sur la documentation officielle du fournisseur.
Sources: GetInfoUs Independent AI Benchmarks & Official API Specs