Aion-RP 1.0 (8B) vs Seed-2.0-Code: which should you choose in 2026?
Aion-RP 1.0 (8B) (by Aion Labs) and Seed-2.0-Code (by ByteDance) are compared below. Here is how they stack up on benchmarks, price, and capabilities, and which one to pick in 2026.
There are not enough shared, protocol-compatible benchmark results to declare a performance leader.
At least one model uses context-dependent token-pricing tiers, so the published base rates do not support an unconditional blended price comparison.
Seed-2.0-Code has the larger context window (262,144 tokens vs 32,768 tokens).
Choose Aion-RP 1.0 (8B) if…
- • your own prompt tests favor its output; shared comparable evidence does not identify a unique advantage
Choose Seed-2.0-Code if…
- • you work with longer documents, transcripts, or codebases
- • you need a model with explicit reasoning support
- • you need image inputs
The benchmark count includes only results measured with a matching benchmark version and protocol. Arena scores are shown separately. Missing, preliminary, and incompatible data is not treated as a controlled win. Published point-score comparisons are labeled separately when protocol details are incomplete. For text-output models, the verdict also compares token pricing and context windows.
Performance benchmarks
Every value links to its source. A dash means that no reviewed result is available for that exact model and protocol.
| Benchmark | Aion-RP 1.0 (8B) | Seed-2.0-Code |
|---|---|---|
A 657-task benchmark of multi-step work across simulated SaaS applications in six business domains. The Artificial Analysis protocol reports a guardrail-aware score and is distinct from both the public Zapier split and the unrelated dynamic AutoBench framework. Guardrail-aware score | — | — |
A benchmark of difficult, verifiable information-seeking questions designed to measure an agent's ability to locate hard-to-find facts through web browsing. Accuracy | — | — |
A verified computer-use benchmark in which multimodal agents operate desktop applications and are graded from the resulting environment state. Mean task reward | — | — |
A human-validated subset of real GitHub issues used to measure whether a coding agent can produce repository patches that resolve the associated tests. Resolved | — | — |
Version 2.1 of the benchmark for completing realistic tasks in terminal environments. Harness, resource limits, and attempt count are part of the protocol. Mean task success | — | — |
A dynamic LLM evaluation framework in which models generate questions, answer them, and participate in reciprocal peer assessment. AutoBench is distinct from Zapier's AutomationBench. Weighted peer-assessment score | — | — |
The highest-quality subset of Graduate-Level Google-Proof Q&A, designed to test expert-level scientific reasoning in biology, physics, and chemistry. Accuracy | — | — |
A 2,500-question expert-level benchmark spanning dozens of academic fields. Tool-assisted and no-tools results are separate protocols and must not be merged. Accuracy | — | — |
Benchmark sources
Reviewed evidence last updated 2026-08-09.
Pricing, capabilities, and model facts
| Feature | Aion-RP 1.0 (8B) | Seed-2.0-Code |
|---|---|---|
| Context & model facts | ||
| Developer | Aion Labs | ByteDance |
| API provider | AionLabs | ByteDance Seed |
| Input context | 32,768 tokens | 262,144 tokens |
| Maximum output | 29,491 tokens | 131,072 tokens |
| Released | — | — |
| Added to Writingmate | Feb 4, 2025 | Aug 12, 2026 |
| License | Not available | Not available |
| Knowledge cutoff | 2023-12-31 | — |
| Capabilities | ||
| Inputs | Text | Text, Image, Video |
| Outputs | Text | Text |
| Provider endpoint accepts tool parameters | No | Yes |
| Reasoning | No | Yes |
| Vision | No | Yes |
| Image Generation | No | No |
| Video Generation | No | No |
| API pricing | ||
| Base input (per 1M tokens) | $0.80 | $0.50 |
| Base output (per 1M tokens) | $1.60 | $3.00 |
| Higher-context pricing tiers | Base rate only |
|
| Price-comparison caveat | At least one model changes token rates above a prompt-token threshold. Base rates are shown, but an unconditional blended price ratio would not be like-for-like. | |
| API performance | ||
| p95 latency | Not measured | Not measured |
| Output throughput | Not measured | Not measured |
| Writingmate shows API performance only when both models have enough observations from the same measurement window, prompt profile, and provider. Third-party latency values are not copied into this table. | ||
Data sources
- Writingmate model catalog (pricing, limits, and availability)
Catalog data last updated Aug 12, 2026.
Why Pay for Multiple Subscriptions?
Comparing Aion-RP 1.0 (8B) from Aion Labs with Seed-2.0-Code from ByteDance? Instead of managing separate API keys and subscriptions, get both with Writingmate.
| Plan | Price | Aion-RP 1.0 (8B) | Seed-2.0-Code | AI Images | AI Video |
|---|---|---|---|---|---|
Writingmate Pro Most popular | $20/mo | Included | Included | Nano Banana Pro, FLUX.2, DALL-E & more | Sora 2, VEO 3.1 |
Writingmate Ultimate Power users | $60/mo | Included | Included | Nano Banana Pro, FLUX.2, DALL-E & more | Sora 2, VEO 3.1 |
Aion-RP 1.0 (8B) vs Seed-2.0-Code FAQ
Which is better, Aion-RP 1.0 (8B) or Seed-2.0-Code?
There are not enough shared, protocol-compatible benchmark results to declare a performance leader. At least one model uses context-dependent token-pricing tiers, so the published base rates do not support an unconditional blended price comparison. Seed-2.0-Code has the larger context window (262,144 tokens vs 32,768 tokens).
Which model is cheaper to use through an API?
At least one model uses context-dependent token-pricing tiers, so the published base rates do not support an unconditional blended price comparison.
Which model supports more context?
Seed-2.0-Code has the larger context window (262,144 tokens vs 32,768 tokens).
Can I switch between Aion-RP 1.0 (8B) and Seed-2.0-Code?
Yes. Use the model selector on this page to open any current Writingmate model comparison. You can also run the same prompt with both models in Writingmate.
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