Claude Opus 4.1
Claude Opus 4.1 is a legacy integration reference; evaluate Claude Opus 5.5 before starting new work.
- Family
- Claude 4
- Released
- 2025-08-01
- Lifecycle
- Retired August 5, 2026
- Context
- 200K
- Knowledge cutoff
- 2025-03
- Openness
- Proprietary
- License
- ProprietaryRestricted
- Weights
- Not released
- Code
- Unknown
Cheapest of 1 route · AWS Bedrock
Cheapest of 1 route · AWS Bedrock
This model is deprecated. Anthropic recommends switching to Claude Opus 5.5.
About
Claude Opus 4.1 is Anthropic's Claude 4 model. It offers a 200K-token context window and scores 77.1 on MMMU.
Providers(1)
Compare API pricing across 1 tracked provider route for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Route |
|---|---|---|---|
| AWS Bedrock | $15.00 | $75.00 | Serverless Scheduled retirement: January 8, 2027 |
Deprecated provider routes(4)
| Provider | Status | Catalog ID |
|---|---|---|
| Anthropic | DeprecatedRetired August 5, 2026 | — |
| OpenRouter | DeprecatedRetired August 5, 2026 | anthropic/claude-opus-4.1 |
| Microsoft Foundry | DeprecatedRetired August 5, 2026 | claude-opus-4-1 |
| Vercel AI Gateway | DeprecatedRetired August 5, 2026 | anthropic/claude-opus-4.1 |
Available via routers & gateways(16)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 500+ models from 80+ providers via a single OpenAI-compatible API, with an optional Auto Router that selects a model per prompt from market spend data.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, caching, and guardrails; MIT-licensed open-source core is self-hostable. Now part of Palo Alto Networks as Prisma AIRS AI Gateway.
AIRouter
RouterCommercial LLM router (branded "AI Router" on its site) that picks the best model per request via a Decision API or an OpenAI-compatible Chat Completions endpoint, with a private selection mode that routes on anonymized patterns; sold as BYOK subscription plans priced by routed tokens.
Amazon Bedrock Intelligent Prompt Routing
RouterAWS Bedrock's native prompt router that predicts each model's performance per request and routes between two models of the same family (Anthropic Claude, Meta Llama or Amazon Nova).
Azure AI Foundry Model Router
RouterMicrosoft Azure AI Foundry's native model router that uses a trained ML model to route each prompt in real time to the optimal Azure-hosted model, with Balanced/Cost/Quality mode selection and automatic failover.
Capabilities
Benchmark peer barsfor Vision
Benchmark scores(2)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| 77.1 | —Observed 2026-04-15 | — | ||
| 1410.0 | text creative_writing 2026-10-22Observed 2026-10-22 | Configuration: Claude Opus 4.1 (20250805) Harness: LMArena blind pairwise human votes, Bradley-Terry Evaluator: LMArena Confidence: confirmed Notes: LMArena Text arena, Creative Writing category (no style control), board published 2026-10-22 (HF lmarena-ai/leaderboard-dataset @a467e6b9, text config, latest split). Board entry 'Claude Opus 4.1 (20250805)' (category creative_writing in text/latest-00000-of-00001.parquet): rank 82 of 416, rating 1410.4 (95% CI 1404.2-1416.6), 10881 votes. LLM Reference model is lifecycle-deprecated; score kept as historical. Other board entries for this model, not used: 'Claude Opus 4.1 (Thinking 16K, 20250805)' 1412.0 (rank 78). Source: LMArena (CC BY 4.0). Retrieved 2026-10-27. | Source Source: LMArena (lmarena.ai), CC BY 4.0 |
Migration checks
No linked migration route is available for this model yet.