Claude Opus 5 Paid vs AIAion-RP 1.0 (8B) Paid
Claude Opus 5 vs Aion-RP 1.0 (8B) compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.
Claude Opus 5 — full profile › · Aion-RP 1.0 (8B) — full profile ›
Prices & specs refreshed from live data · olud.ai
Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.
$25 /M outputManaged API (no infra to run)
$1.6 /M outputManaged API (no infra to run)
Claude Opus 5 vs Aion-RP 1.0 (8B) specs
| Spec | Claude Opus 5 | Aion-RP 1.0 (8B) | Winner |
|---|---|---|---|
| Maker | Anthropic | AionLabs | – |
| Type | Proprietary | Proprietary | – |
| Context window | 1M tokens | 33K tokens | |
| Input price | $5/M | $0.8/M | AIAion-RP 1.0 (8B) |
| Output price | $25/M | $1.6/M | AIAion-RP 1.0 (8B) |
| Vision / multimodal | Yes | No | |
| Tool / function calling | Yes | No | |
| Self-hostable | No (API only) | No (API only) | – |
| License | Proprietary | Proprietary | – |
Price gap & when to choose each
Aion-RP 1.0 (8B) is ~16× cheaper than Claude Opus 5 on output tokens ($1.6 vs $25 per M tokens).
- You want frontier performance through a managed API
- You need the longer 1M context window
- You value reliability & ecosystem
- You don't want to manage infrastructure
- You want frontier performance through a managed API
- You want the lower output price
- You value reliability & ecosystem
- You don't want to manage infrastructure
Feature comparison
| Capability | Claude Opus 5 | Aion-RP 1.0 (8B) |
|---|---|---|
| Open weights (downloadable) | ✗ | ✗ |
| Self-hostable | ✗ | ✗ |
| Runs fully offline | ✗ | ✗ |
| Vision / multimodal | ✓ | ✗ |
| Tool / function calling | ✓ | ✗ |
| 1M+ context window | ✓ | ✗ |
Benchmarks: Claude Opus 5 vs Aion-RP 1.0 (8B)
Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).
Benchmark data by Artificial Analysis.
How Claude Opus 5 and Aion-RP 1.0 (8B) score
| Criterion | Claude Opus 5 | Aion-RP 1.0 (8B) |
|---|---|---|
| Cost-efficiency | 3.0 | 4.5 |
| Context window | 5.0 | 2.5 |
| Openness | 1.5 | 1.5 |
| Self-hosting | 1.0 | 1.0 |
| Multimodality | 5.0 | 2.0 |
Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.
What each model is
Claude Opus 5 Paid
Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...
Aion-RP 1.0 (8B) Paid
Aion-RP-Llama-3.1-8B ranks the highest in the character evaluation portion of the RPBench-Auto benchmark, a roleplaying-specific variant of Arena-Hard-Auto, where LLMs evaluate each other’s responses. It is a fine-tuned base model...
Other models in these families
These variants are tracked but not compared here — one page per family keeps the comparison readable.
Frequently asked questions
Claude Opus 5 vs Aion-RP 1.0 (8B) — which is cheaper?
Aion-RP 1.0 (8B) is cheaper on output ($1.6/M vs $25/M).
Which has the larger context window?
Claude Opus 5 offers the larger context window (1M tokens).
Claude Opus 5 vs Aion-RP 1.0 (8B) — which should I pick in 2026?
Choose Aion-RP 1.0 (8B) for the lower output price ($1.6/M vs $25/M). Choose Claude Opus 5 if you need the larger 1M context window.
People also compare
Explore more open-source AI
Browse the full open-source model leaderboard, thousands of tools and live benchmarks — all in one place.
Open the leaderboard →