Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...
Updated 48 min ago · first seen 11 Sept 2026
model_01M293VBCVVVEGN4VQFPCAPA89
- Context
- 1M tokens
- T2 · 48 min ago
- Released
- 27 May 2026
- T2 · 48 min ago
Specification
- Family
- Claude
Source:Claude Developer Platform docsT1observed 1 h agohigh
- Release date
- 27 May 2026
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Status
- active
Source:Claude Developer Platform docsT1observed 1 h agohigh
- Openness
- proprietary
Source:Claude Developer Platform docsT1observed 1 h agohigh
- Context window
- 1M tokens
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Max output
- 128K tokens
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Modalities
- image, text
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Input modalities
- image, text
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Output modalities
- text
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Tokenizer
- Claude
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Retirement date
- 28 May 2027
Source:Claude Developer Platform docsT1observed 1 h agohigh
- Retirement tentative
- Yes
Source:Claude Developer Platform docsT1observed 1 h agohigh
- File input
- Yes
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Openrouter id
- anthropic/claude-opus-4.8
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Supported parameters
- include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, stop, structured_outputs, temperature, tool_choice, tools, verbosity
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →
Provenance
Attributed facts
20
Source tiers
T1T25 / 15
Freshest observation
48 min ago
Conflicts
None
Modalities
- Modalities
- imagetext
- Input
- imagetext
- Output
- text
Capabilities
Tool calling
Yes
OpenRouter public model & pricing listing · T2
Structured output
Yes
OpenRouter public model & pricing listing · T2
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Yes
OpenRouter public model & pricing listing · T2
Audio
Unavailable
Fine-tuning available
Unavailable
- Context window
- 1M tokens
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Max output
- 128K tokens
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
- Tokenizer
- Claude
Source:OpenRouter public model & pricing listingT2observed 48 min agomedium
No benchmark results recorded
Current prices
| Provider | Input / 1M | Output / 1M | Cached in | Batch in / out | Context | Observed | Source |
|---|---|---|---|---|---|---|---|
| Anthropic APIanthropic/claude-opus-4.8:batch | $2.5 | $12.5 | $0.25 | — | 1M | 48 min ago | openrouter.aiT2 |
| Anthropic API | $5 | $25 | $0.50 | — | — | 1 h ago | platform.claude.comT1 |
| Anthropic APIanthropic/claude-opus-4.8 | $5 | $25 | $0.50 | — | 1M | 48 min ago | openrouter.aiT2 |
USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.
Available through 1
Price history
Input price · USD / 1M tokens
Output price · USD / 1M tokens
- Anthropic API
No hardware estimate available
No lineage recorded
Papers 0
No papers linked yet.
Repositories 0
No repositories linked yet.
As of
Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.
Claim history · Retirement date
Retirement dateretirement_date1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 28 May 2027 | → current | current | Claude Developer Platform docsT1 | high | deterministic |
Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →
Anthropic API lists Claude Opus 4.8 at $2.5 in / $12.5 out per 1M tokens
openrouterAnthropic API lists Claude Opus 4.8 at $5 in / $25 out per 1M tokens
openrouterAnthropic API lists Claude Opus 4.8 at $5 in / $25 out per 1M tokens
anthropic
| Source | Document | Type | Tier | Last observed | Snapshots |
|---|---|---|---|---|---|
| Claude Developer Platform docs | docs.claude.com/en/docs/about-claude/model-deprecations.md | model_docs | T1· Official | 58 min ago | 1 |
| Claude Developer Platform docs | docs.claude.com/en/docs/about-claude/pricing.md | pricing | T1· Official | 58 min ago | 1 |
| OpenRouter public model & pricing listing | openrouter.ai/api/v1/models | catalogue | T2· Quality secondary | 48 min ago | 1 |
Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.