Claude 3 Opus: Complete Specifications, Pricing, API Access & Use Cases (2026)
What Is Claude 3 Opus?
Claude 3 Opus is Anthropic’s retired Opus-tier multimodal large language model, released on March 4, 2024, featuring a 200K-token context window and text-and-image input with text output, with historical API pricing of $15 per 1M input tokens and $75 per 1M output tokens as of June 2026.
Anthropic launched Claude 3 Opus as the highest-capability model in the Claude 3 family, above Claude 3 Sonnet and Claude 3 Haiku. At launch, Anthropic positioned the Claude 3 family for analysis, forecasting, nuanced content creation, code generation, and multilingual conversation.
The key 2026 lifecycle fact is that Anthropic’s deprecation page lists claude-3-opus-20240229 as retired on January 5, 2026, with claude-opus-4-8 as the recommended replacement.
What Are Claude 3 Opus’s Key Specifications and Pricing?
| Field | Value |
|---|---|
| Provider | Anthropic (as of June 2026) |
| Model Family | Claude 3 / Opus tier (as of June 2026) |
| Model Type | Multimodal large language model (as of June 2026) |
| Release Date | March 4, 2024 (as of June 2026) |
| Context Window | 200K tokens at launch; select customers could inquire about inputs exceeding 1M tokens (as of June 2026) |
| Input Pricing | Historical API price: $15 per 1M input tokens (as of June 2026) |
| Cached Input Pricing | Not specified for Claude 3 Opus in current official pricing documentation as of June 2026. |
| Output Pricing | Historical API price: $75 per 1M output tokens (as of June 2026) |
| Pricing Unit | USD per million tokens / MTok (as of June 2026) |
| Modality Support | Text and image input; text output (as of June 2026) |
| Supported Input Types | Text, images, charts, graphs, technical diagrams, and visual document content (as of June 2026) |
| Supported Output Types | Text output (as of June 2026) |
| API Access | Retired on Anthropic-operated platforms on January 5, 2026 (as of June 2026) |
| Model ID | claude-3-opus-20240229 (as of June 2026) |
| Availability | Retired on the Claude API; partner-platform schedules may differ (as of June 2026) |
| Knowledge Cutoff | August 2023 for Claude Opus 3 training data (as of June 2026) |
| Rate Limits | Not confirmed from official sources as of June 2026. |
| Fine-tuning Support | Not confirmed from official sources as of June 2026. |
| Streaming Support | Formerly available through Claude API patterns, but model access is retired as of June 2026. |
| Batch API Support | Not confirmed for Claude 3 Opus in current official documentation as of June 2026. |
| Tool / Function Calling | Claude tool use is documented for current models; current model-specific support for retired Claude 3 Opus is not confirmed as of June 2026. |
| Structured Output / JSON Mode | Claude 3 was described as improved at producing structured formats, but a model-specific guaranteed JSON mode is not confirmed as of June 2026. |
| License / Usage Restrictions | Proprietary Anthropic model; usage subject to Anthropic terms and policies (as of June 2026). |
Anthropic’s launch post is the primary source for Claude 3 Opus’s release context, 200K context window, historical pricing, and vision support, while Anthropic’s deprecation documentation is the primary source for the model’s retired status.
What Can Claude 3 Opus Do That Makes It Useful in Production?
Claude 3 Opus was useful for long-context analysis because its 200K-token context window allowed teams to process large documents, research files, policy material, contracts, and multi-part prompts in one request. This mattered for retrieval-augmented generation, document review, and analytical assistants, but the model’s 2026 retirement means new production systems should not depend on its first-party API availability.
It supported visual understanding for photos, charts, graphs, and technical diagrams. That made it relevant for enterprise knowledge bases where information appears in PDFs, slide decks, flowcharts, or chart-heavy reports. The limitation is that visual interpretation still requires validation for high-stakes, numerical, legal, medical, or financial decisions.
It was also relevant for multilingual writing, code generation, and analytical drafting. Anthropic described the Claude 3 family as improved for analysis, forecasting, nuanced content creation, code generation, and non-English conversation. These are productivity capabilities, not guarantees of correctness.
What Are Claude 3 Opus’s Supported Modalities?
| Modality | Supported? | Notes |
|---|---|---|
| Text input | Yes | Core conversational, reasoning, and analysis input. |
| Image input | Yes | Anthropic said Claude 3 models process photos, charts, graphs, and technical diagrams. |
| Audio input | Not confirmed | No official Claude 3 Opus audio-input support was confirmed in reviewed sources. |
| Video input | Not confirmed | No official Claude 3 Opus video-input support was confirmed in reviewed sources. |
| Text output | Yes | Claude 3 Opus was offered through Claude.ai and the Claude API for conversational output. |
| Image output | No verified support | Claude 3 Opus was not documented as an image-generation model in reviewed official sources. |
| Audio output | Not confirmed | No model-specific Claude 3 Opus audio-output support was confirmed in reviewed sources. |
Where Does Claude 3 Opus Fall Short?
The largest limitation is availability. As of June 2026, Anthropic lists Claude 3 Opus as retired on Anthropic-operated platforms, so requests to the retired model ID should not be treated as reliable for production access.
Cost was another constraint. At its historical price of $15 per 1M input tokens and $75 per 1M output tokens, Claude 3 Opus was expensive relative to later Anthropic models such as Claude Opus 4.8 at $5 per 1M input tokens and $25 per 1M output tokens.
Knowledge freshness is limited. Anthropic’s support documentation says Claude Opus 3 was trained on data up to August 2023, so the model may not know later events unless supplied in context. (Claude Help Center)
This is also a general AI limitation and is not model-specific unless stated by the provider: Claude 3 Opus could hallucinate, misunderstand visual content, produce outdated answers, or generate plausible but incorrect code. High-stakes legal, medical, financial, security, or compliance use requires expert review.
What Is Claude 3 Opus Best Used For?
| Use Case | Why Claude 3 Opus May Fit | Important Limitation |
|---|---|---|
| Historical model evaluation | Useful when comparing 2024-era frontier LLM behavior against newer models. | Retired first-party API access limits reproducibility. |
| Long-document analysis | 200K context supported large prompts and document bundles. | New projects should test current replacements. |
| Chart and diagram interpretation | Claude 3 supported visual formats such as charts and technical diagrams. | Visual reasoning can still be wrong; verify outputs. |
| Complex drafting and analysis | Designed for reasoning, content creation, coding, and multilingual work. | Cost and latency were higher than smaller models. |
| Migration planning | Useful as a baseline for teams moving old Claude 3 Opus workflows to Claude Opus 4.8. | Replacement behavior must be tested task by task. |
For adjacent model research, teams often compare Claude 3 Opus with Claude 3.5 Sonnet, Claude 3.5 Haiku, GPT-4o, GPT-4o mini, Gemini 2.0 Flash, OpenAI o3, OpenAI o4-mini, and Llama 3.1 8B when evaluating cost, latency, modality, model size, and API lifecycle trade-offs.
How Does Claude 3 Opus Compare to Claude Opus 4.8 and Claude Sonnet 4.6?
Anthropic’s deprecation documentation recommends claude-opus-4-8 as the replacement for claude-3-opus-20240229; current Anthropic docs list Claude Opus 4.8 and Claude Sonnet 4.6 as active models with newer pricing and model IDs.
How Do I Access Claude 3 Opus?
Claude 3 Opus was originally available through Claude.ai and the Claude API, with the API model ID claude-3-opus-20240229. As of June 2026, Anthropic’s deprecation page lists that model as retired on Anthropic-operated platforms, with claude-opus-4-8 as the recommended replacement.
Because Claude 3 Opus is retired, this page does not include executable Python or curl examples for calling claude-3-opus-20240229. For current applications, developers should use Anthropic’s current Messages API documentation and test an active replacement model before migrating production workloads.
FAQs
What is Claude 3 Opus’s context window?
Claude 3 Opus launched with a 200K-token context window. Anthropic also said Claude 3 models could accept more than 1M tokens for select use cases by inquiry, but 200K was the standard launch figure.
How much did Claude 3 Opus cost?
Anthropic’s launch material listed Claude 3 Opus at $15 per 1M input tokens and $75 per 1M output tokens. As of June 2026, this is historical pricing because the model is retired on Anthropic-operated platforms.
Can I still access Claude 3 Opus through the Anthropic API?
Anthropic lists claude-3-opus-20240229 as retired on January 5, 2026. New applications should not rely on it and should test Anthropic’s recommended replacement, claude-opus-4-8.
What is Claude 3 Opus useful for today?
Claude 3 Opus is mainly useful as a historical reference model, a migration baseline, or a comparison point for teams updating old Claude 3 workflows to current Claude Opus or Sonnet models.
