Claude Opus 4.8
Claude Opus 4.8 is Anthropic's large language model that was positioned as a frontier coding model priced at $5 per million input tokens and $25 per million output tokens. The model has been superseded by Claude Opus 5, which Anthropic released at the same price point while improving security metrics, enabling extended context windows, and activating reasoning capabilities by default, though Opus 4.8 has since faced competitive pressure from lower-cost alternatives including xAI's Grok 4.5 and Chinese models offering comparable coding performance at a fraction of the cost.
Updated 3 August 2026
Specifications
No specifications recorded yet.
Latest developments
Cogent AI Team Releases VR-1: A Frontier Cyber Reasoning Model That Composes and Verifies Enterprise Attack Paths
MarkTechPost · 5 hours ago ·
5
[AINews] Much ado about Open Weights
Latent Space · 6 days ago ·
26
Claude Opus 5: The System Card
Zvi (Don't Worry About the Vase) · 1 week ago ·
2
Introducing Claude Opus 5
Simon Willison · 1 week ago ·
47
Meet the New Claude Opus 5: Frontier-Class Agentic Coding and Computer Use at Unchanged Opus Pricing
MarkTechPost · 1 week ago ·
29
Opus 5 costs a third of the price — and that’s actually the problem
The New Stack · 1 week ago ·
45
Cursor, Ramp, and Meta are all building model routers — but two have major model ambitions themselves
The New Stack · 1 week ago ·
40
Cursor Releases Cursor Router: A Request-Level Classifier Delivering Frontier Coding Quality at 30–50% Lower Cost
MarkTechPost · 1 week ago ·
28
August 2026
July 2026
Anthropic releases Claude Opus 5, matching Fable 5 capabilities at half the price Model release
Cursor launches Cursor Router, an AI model classifier that reduces coding task costs by 30-50% through intelligent request routing Feature update
Moonshot AI releases Kimi K3, a 2.8 trillion parameter open-weight model achieving frontier-class performance Open source release
Moonshot AI releases Kimi K3, a 2.8 trillion parameter open-weight model with API pricing and delayed weights availability Model release
Moonshot AI releases Kimi K3, a 2.8 trillion-parameter open-weight model competing with frontier American systems Model release
Anthropic restores Claude Fable 5 after US government suspension over cybersecurity concerns Incident
Claude Sonnet 5 Release and Tokenizer Efficiency Comparison with Competitors Model release
Anthropic extends Claude Fable 5 free access through July 19 for paid subscribers Feature update
xAI launches Grok 4.5, an Opus-class large language model developed in partnership with Cursor Model release
Analysis reveals Claude Sonnet 5 has higher effective costs and lower quality than predecessor despite lower per-token pricing Feature update
Fable 5 released and achieves top performance on CursorBench benchmark Model release
Anthropic redeployed Fable 5 AI model with enhanced safety restrictions following government export controls Feature update
- [AINews] Much ado about Open Weights
- Claude Opus 5: The System Card
- Introducing Claude Opus 5
- Meet the New Claude Opus 5: Frontier-Class Agentic Coding and Computer Use at Unchanged Opus Pricing
- Opus 5 costs a third of the price — and that’s actually the problem
- Cursor, Ramp, and Meta are all building model routers — but two have major model ambitions themselves
- Cursor Releases Cursor Router: A Request-Level Classifier Delivering Frontier Coding Quality at 30–50% Lower Cost
- China’s Low-Priced Z.ai Model Is Exposing Costly Coder Habits
- LWiAI Podcast #247 - Opus 4.8, MAI, Anthropic IPO, Minimax-M3
- I trust Claude for everything. This test made me rethink that.
- Kimi K3 tops Arena’s coding leaderboard — and it’s open-weight
- [AINews] Kimi K3 2.8T-A50B: the largest open model ever released; Opus 4.8-class at Sonnet 5 pricing
- Moonshot’s upcoming Kimi 3 is expected to close the gap with Anthropic’s Opus 4.8
- Restoration of Claude Fable 5, Gemini's Video Dev Engine, DeepSeek Speeds Up Speculative Decoding
- Introducing Claude Sonnet 5
- The Same TypeScript Costs 73% More Tokens on Claude Than GPT
- Anthropic extends Fable 5 again — and won’t talk about what developers found inside Cursor
- 6 months to live for open models
- Fable 5 Vs Opus 4.8: Outcomes-Based Assessments Are A Massive Warning For Frontier AI Labs
- Grok x Cursor
- Price per 1M tokens is meaningless
- Better Models: Worse Tools
- Fable 5 will default to Opus 4.8 for coding tasks
- Fable is Back: This Safeguard Has Some AI in It!
June 2026
Multiple AI labs release new model variants and agent capabilities Model release
Zhipu releases GLM-5.2 open-weight model achieving performance parity with frontier closed-source models Model release
Anthropic releases Claude Fable 5 model with improved benchmarks and new safety restrictions Model release
Anthropic releases Claude Opus 4.8 with improved agentic capabilities and dynamic workflows Model release
Relationships
Products & technology
- Anthropic develops this model · 15 sources
- Claude Opus 5 derived from this model · 1 source
- Fable 5 integrated with this model · 1 source
- Claude Honeycomb EAP integrated with this model · 1 source