Beam 1.0 501B A23B vs Kimi K2.7 Code
Pricing, context window and real answers (October 2026)
Beam 1.0 501B A23B (Reflection AI) and Kimi K2.7 Code (Moonshot), compared as you can actually call them on FastMetal. Both are served from the same OpenAI-compatible endpoint and API key; switching is a change to the model string.
Specs and pricing
| Beam 1.0 501B A23B |  Kimi K2.7 Code | |
|---|---|---|
| Provider | Reflection AI | Moonshot |
| Input (per 1M tokens) | $0.422 | $0.3505 |
| Output (per 1M tokens) | $1.27 | $3.38 |
| Typical cost (1,000 in + 500 out tokens × 1,000 calls) | $1.06 | $2.04 |
| Context window | 1,048,576 tokens | 262,144 tokens |
| Release date | 10/16/2026 | 6/12/2026 |
| Input modalities | text | text, image |
| Throughput (p50) | — | 115 tokens/s (n=24) |
| Arena · overall | Unranked | Unranked |
| Arena · Japanese | Unranked | Unranked |
| Arena · coding | Unranked | Unranked |
Prices are FastMetal's rates, before tax.
Rankings: LMArena leaderboard dataset (lmarena-ai/leaderboard-dataset), CC BY 4.0, snapshot 2026-10-15; category names mapped and ratings rounded by FastMetal.
Which should you pick?
- On price, Beam 1.0 501B A23B: $1.27 per 1M output tokens, 63% less than Kimi K2.7 Code.
- For long documents, Beam 1.0 501B A23B: a 1,048,576-token context window against 262,144 for Kimi K2.7 Code.
- If in doubt, try both on the same key. Switching is a change to the model string, and each is billed at its own rate.
Frequently asked questions
- Which is cheaper, Beam 1.0 501B A23B or Kimi K2.7 Code?
- Per 1M output tokens, Beam 1.0 501B A23B is $1.27 and Kimi K2.7 Code is $3.38 on FastMetal (US dollars, before tax), so Beam 1.0 501B A23B is cheaper.
- How do the context windows of Beam 1.0 501B A23B and Kimi K2.7 Code compare?
- Beam 1.0 501B A23B takes 1,048,576 tokens; Kimi K2.7 Code takes 262,144.
- Can I use Beam 1.0 501B A23B and Kimi K2.7 Code with the same API key?
- Yes. On FastMetal's OpenAI-compatible endpoint, switch by passing "beam-1.0" or "japan-kimi-k2.7-code" as the model. Each is billed at its own rate from the same prepaid balance.
Try both on one API key
Create an account and add credit to call Beam 1.0 501B A23B and Kimi K2.7 Code from the browser chat and the API. No monthly fee.