Identity
- Status
- active
- Developer ID
claude-opus-4-5-20251101- Released
- Nov 24, 2025
- Version
- Claude Opus 4.5
- License
- Unknown
AnthropicClaude Opus 4.5
Claude Opus 4.5 is an Anthropic Claude model for reasoning, coding, multimodal analysis, and tool-using agents.
- Context
- 200,000 tokens
- Inputs
- Text, Image
- Outputs
- Text
- Released
- Nov 24, 2025
Benchmark Market Position
Quality, Cost, and Position
Efficiency FrontierLiveBench overall · output estimate
Expand →Cost, RankedScore-adjusted output estimate · lowest first
Expand →- 1Grok Build 0.1$0.0028
- 2DeepSeek-V4-Flash$0.0086
- 3GLM-5.3-Flash$0.012
- 4MiniMax-M3$0.024
- 5GPT-5.6 Luna (max)$0.034
- 6Grok 4.3$0.040
- 7Gemini 3.5 Flash-Lite (high)$0.043
- 8DeepSeek-V4-Flash-Vision-Exp$0.044
- 9DeepSeek-V4-Pro$0.070
- 10Gemini 3.6 Flash (high)$0.071
- 11GLM-5.2$0.073
- 12GPT-5.4 Nano (extra high)$0.077
- 13Grok 4.5$0.079
- 14Qwen3.8-27B$0.094
- 15Gemini 3.7 Flash (high)$0.102
- 16Grok 4.6$0.118
- 17Kimi-K2.6$0.127
- 18Qwen3.8-Max$0.131
- 19GPT-5.6 Sol (max)$0.138
- 20Gemini 3.5 Flash (high)$0.177
- 21Gemini 3.1 Pro (high)$0.197
- 22GPT-5.2 (high)$0.203
- 23Kimi-K3$0.240
- 24Claude Sonnet 4.6$0.257
- 25Claude Opus 4.6$0.307
- 26GPT-5.4 Mini (extra high)$0.307
- 27GLM-5.3$0.314
- 28GPT-5.6 Terra (max)$0.323
- 29GPT-5.4 (extra high)$0.333
- 30Claude Opus 4.7$0.354
- 31GPT-5.5 (extra high)$0.403
- 32Claude Opus 5$0.444
- 33Claude Opus 4.5$0.491
- 34Claude Opus 4.8$0.744
- 35Claude Fable 5$1.17
The outlined observation is Claude Opus 4.5. Cost views require publisher-reported LiveBench output tokens and a current sourced USD output-token rate; models missing either input are omitted.
Providers & Pricing
Estimate workload cost →| Provider | Input / 1M | Output / 1M | Cache read / 1M | Cache write / 1M | Observed | Evidence |
|---|---|---|---|---|---|---|
AnthropicAvailable | $5.00 | $25.00 | $0.50 | — | Sep 3, 2026 | Provider-reported |
Benchmarks
All benchmark results →| Berkeley Function Calling Leaderboardv4-ede5081a24bc | 77.47 | — | — | Claude-Opus-4-5-20251101 (FC)unknown | Recomputedwinner eligible | Third-party benchmark |
| Berkeley Function Calling Leaderboardv4-ede5081a24bc | 33.47 | — | — | Claude-Opus-4-5-20251101 (Prompt)unknown | Recomputedwinner eligible | Third-party benchmark |
| LiveBench2026-06-25 | 77.39 | 15,203 | 1,270 | claude-opus-4-5-20251101-thinking-64k-high-effortaverage per case | Recomputedwinner eligible | Third-party benchmark |
| LMArena Document Arenadocument-2026-07-30-011508720696 | 1,461.65 | — | 7,965 | claude-opus-4-5-20251101; 95% CI [1451.22442739, 1472.08183979]; votes 7965; rank 19unknown | Original sourcewinner eligible | Third-party benchmark |
| LMArena Search Arenasearch-2026-08-24-011508720696 | 1,179.64 | — | 61,573 | claude-opus-4-5-search; 95% CI [1174.02872051, 1185.26030035]; votes 61573; rank 19unknown | Original sourcewinner eligible | Third-party benchmark |
| LMArena Text Arenatext-2026-09-01-011508720696 | 1,450.35 | — | 70,057 | claude-opus-4-5-20251101; 95% CI [1447.17072951, 1453.51975270]; votes 70057; rank 42unknown | Original sourcewinner eligible | Third-party benchmark |
| LMArena Text Arenatext-2026-09-01-011508720696 | 1,447.19 | — | 36,271 | claude-opus-4-5-20251101-high-32k; 95% CI [1443.28922560, 1451.09589305]; votes 36271; rank 46unknown | Original sourcewinner eligible | Third-party benchmark |
At a Glance
Model Facts
Capacity
- Context
- 200,000 tokens
- Maximum output
- 64,000 tokens
- Total parameters
- Unknown
- Active parameters
- Unknown
- Knowledge cutoff
- May 1, 2025
Interface and Access
- Inputs
- Text, Image
- Outputs
- Text
- API available
- Yes
- Open weights
- No
- Self-hostable
- No
- Reasoning
- Yes
- Vision
- Yes
- Tool calling
- Yes
- Capabilities
- chat, generation, reasoning, structured outputs, tools
This page represents one immutable developer model ID. Serving endpoints, pricing, regions, quantizations, and service tiers attach separately and never create duplicate model records.
Version Lineage
PredecessorUnknown
SuccessorsUnknown
Aliasesclaude-opus-4-5, claude-opus-4-5-20251101
Explicit Unknowns
- Architecture
- Tokenizer
Primary Evidence
Sources and Observation Date
Comparable Peers
Related Model Comparisons
| A | Pair | B | Context |
|---|---|---|---|
Claude Opus 4.5Anthropic | vs | Claude Opus 4.6Anthropic | family variantsimage, text |
Claude Opus 4.5Anthropic | vs | Claude Opus 4.7Anthropic | family variantsimage, text |
Claude Opus 4.5Anthropic | vs | Claude Sonnet 4.5Anthropic | family variantsimage, text |
Claude Opus 4.5Anthropic | vs |  o3OpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | o3-proOpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs |  Gemma 4 12BGoogle DeepMind | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | GPT-5OpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | GPT-5.4 MiniOpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | GPT-5.4 NanoOpenAI | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | Claude Haiku 4.5Anthropic | family variantsimage, text |
Claude Opus 4.5Anthropic | vs | Seed 1.8ByteDance Seed | cross-developer peersimage, text |
Claude Opus 4.5Anthropic | vs | Seed 2.0 CodeByteDance Seed | cross-developer peerstext |
Questions
Claude Opus 4.5 FAQs
What is Claude Opus 4.5?+
Claude Opus 4.5 is an Anthropic Claude model for reasoning, coding, multimodal analysis, and tool-using agents. It is developed by Anthropic and its current sourced lifecycle status is active.
What inputs and outputs does Claude Opus 4.5 support?+
Claude Opus 4.5's current record lists Text and Image as input and Text as output.
How much context does Claude Opus 4.5 support?+
The current record lists a 200,000-token context window and a maximum output of 64,000 tokens.
Is Claude Opus 4.5 available through an API?+
Claude Opus 4.5 is marked as API-available. The directly sourced provider records currently include Anthropic.
How much does Claude Opus 4.5 cost through an API?+
The lowest directly sourced prices currently attached to Claude Opus 4.5 are $5.00 per million input tokens through Anthropic and $25.00 per million output tokens through Anthropic. Prices are provider-specific and should be checked against each cited observation date.
What capabilities and tasks does Claude Opus 4.5 support?+
Claude Opus 4.5's recorded capabilities are chat, generation, reasoning, structured outputs, and tools. Its supported tasks are image, reasoning, and text.
Can Claude Opus 4.5 be self-hosted?+
Claude Opus 4.5 is not marked as an open-weight model. Self-hosting is marked as unsupported, with no license recorded.
Does Claude Opus 4.5 have related versions or aliases?+
No predecessor is recorded. No successor is recorded. Recorded aliases are claude-opus-4-5 and claude-opus-4-5-20251101.
Which models can Claude Opus 4.5 be compared with?+
The current compatible peer set includes Claude Opus 4.6, Claude Opus 4.7, Claude Sonnet 4.5, o3, and o3-pro. Compatibility requires shared sourced modalities and tasks; it does not imply that one model is better. Browse model comparisons →
How current is the Model Markets record for Claude Opus 4.5?+
Claude Opus 4.5 was last verified Sep 3, 2026 from Anthropic's primary source, “Claude Opus 4.5 | Claude Platform Docs.” The evidence is classified as official fact.