$ diff claude-opus-5 inkling
Claude Opus 5 vs Inkling
Values come from Claude Opus 5 and Inkling, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
AnthropicClaude Opus 5
- context
- 1M
- weights
- closed
- $/M in
- $5
- $/M out
- $25
- context
- 1M
- weights
- open
- $/M in
- —
- $/M out
- —
What actually differs
- Context window
- Identical — both accept 1M tokens, so context length is not a reason to pick either.
- Weights
- Inkling publishes weights (Apache 2.0 (open-weight)); Claude Opus 5 is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- Claude Opus 5 shipped 9 days after Inkling (2026-07-24 vs 2026-07-15).
Full spec
| Attribute | Claude Opus 5 | Inkling |
|---|---|---|
| Developer | Anthropic | Thinking Machines |
| Released | 2026-07-24 | 2026-07-15 |
| Context window | 1M tokens | 1M |
| Pricing | $5/M input · $25/M output (standard); $10/M · $50/M (Fast mode, research preview) | not recorded |
| License | proprietary | Apache 2.0 (open-weight) |
| Availability | Claude.ai, API (`claude-opus-5`), Bedrock (`anthropic.claude-opus-53`), Vertex AI, Microsoft Foundry, Claude Code, Cowork | Hugging Face (BF16 and NVFP4), Tinker (fine-tuning), SGLang, vLLM, llama.cpp, Unsloth |