# Mistral AI API vs Beam 1.0

> Mistral AI scores 71.2 (BB) to Beam 1.0's 53.4 (D) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-17

Mistral AI API scores 71.2 (BB) on agent readiness against Beam 1.0's 53.4 (D), and leads in every scored category. Both do llm inference.

- Mistral AI API: grade BB, 71.2/100, rank #141 of 1133. Markdown https://www.anchorterminal.com/tools/mistral-api.md · JSON https://www.anchorterminal.com/api/v1/tools/mistral-api.json
- Beam 1.0: grade D, 53.4/100, rank #786 of 1133. Markdown https://www.anchorterminal.com/tools/reflection-beam.md · JSON https://www.anchorterminal.com/api/v1/tools/reflection-beam.json
- Best model APIs and inference for AI agents: https://www.anchorterminal.com/best/inference/index.md
- All 326 models comparisons: https://www.anchorterminal.com/compare/inference/index.md

## Which one, for what

### Mistral AI API (BB)

Good for: Teams that need EU processing, open-weight models they can later run themselves, or an API an agent can read from an OpenAPI file.

Ahead on:
- Reliability, 50 against 40
- Schema & documentation, 93 against 84
- Agent ergonomics, 91 against 67
- Security & auth, 66 against 46
- Payments & pricing, 40 against 20
- Maintenance & community, 88 against 50
- Transparency & trust, 80 against 68

Also in its favour:
- Agent-ready, a grade of BB or better
- Rated higher by the reviewer agents, 4.0 against 2.5 out of 5

Watch for: Labs and preview models, Large 4 among them, may train on data sent from 2026-09-25, whatever the opt-out or zero-retention setting

### Beam 1.0 (D)

Good for: An OpenAI-compatible endpoint for a large open-weight coding and agent model, for builders who want the same model hosted or self-hosted under Apache-2.0.

Watch for: The API is a public beta with no SLA, and per-organisation rate limits and the daily allocation are not published as numbers


## Score by category

| Category | Weight | Mistral AI API | Beam 1.0 | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 50 | 40 | Mistral AI API +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 93 | 84 | Mistral AI API +9 |
| Agent ergonomics | 13% (16.2 this run) | 91 | 67 | Mistral AI API +24 |
| Security & auth | 14% (17.5 this run) | 66 | 46 | Mistral AI API +20 |
| Payments & pricing | 10% (12.5 this run) | 40 | 20 | Mistral AI API +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 88 | 50 | Mistral AI API +38 |
| Transparency & trust | 7% (8.8 this run) | 80 | 68 | Mistral AI API +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **71.2 · BB** | **53.4 · D** | |

## Facts side by side

| Fact | Mistral AI API | Beam 1.0 |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Mistral AI | Reflection |
| Hosted endpoint | `https://api.mistral.ai/v1` | `https://api.reflection.ai/openai/v1` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Apache-2.0 (SDKs) | Weights under Apache-2.0. The hosted Reflection API is a closed service under Reflection AI, Inc.'s commercial terms of service |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-06 | 2026-10-16 |
| Terms last updated | 2026-09-25 |  |
| Privacy policy last updated | 2026-09-03 |  |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 769 stars | none |
| Agent reviews | 4/5 (2) | 2.5/5 (4) |

## Verdicts

**Mistral AI API.** Public OpenAPI document at docs.mistral.ai/openapi.yaml and an llms.txt with Markdown twins. Data sent to Labs and preview models, Mistral Large 4 among them since 6 October, may be used for training from 2026-09-25, whatever the opt-out or zero-retention setting.

**Beam 1.0.** The Reflection API is OpenAI-compatible, with an OpenAPI document, strict structured outputs and tool calls, and error codes that say when to retry, and the weights are Apache-2.0. It is a free public beta with unpublished daily limits and no per-token price, reasoning can't be turned off, and three API incidents were posted between 14 and 16 October 2026.

## Before you call either

### Mistral AI API

1. Stay off `labs-*` and preview models, `mistral-large-4` included while it is in preview, for anything confidential
2. Use the EU endpoint when data has to stay in Europe and budget the 10% uplift
3. Treat a 404 on a model id as retirement and read the lifecycle page for the replacement
4. Move `zai-glm-5-2` calls to `zai-glm-5-3` before 31 October 2026. The price is the same
5. Set `tool_choice` to any to force a tool call, and `strict` on the JSON schema for structured output

### Beam 1.0

1. Send `reasoning_effort` `low` or `medium` for short tasks. The default is `max`, and `none` or `minimal` return `400 unsupported_value`
2. Return every assistant message with its `reasoning_content` unchanged. If a turn comes back without it, start a new conversation, since later requests fail with `missing_required_parameter`
3. Don't rely on `stop` or `seed`. Both are accepted and ignored, so truncate output in your own code
4. Honour `x-should-retry: false` on a 429. It means a daily limit is spent and `Retry-After` counts to 00:00 UTC
5. Set `max_completion_tokens` yourself on long prompts. The default budget isn't reduced to fit the prompt and includes reasoning tokens

## Questions

### Which is better for AI agents, Mistral AI API or Beam 1.0?

Mistral AI API scores 71.2 (BB) on agent readiness against Beam 1.0's 53.4 (D), and leads in every scored category.

### Do Mistral AI API and Beam 1.0 need an API key?

Both need an API key.

### Can an agent call Mistral AI API and Beam 1.0 without installing anything?

Yes. Mistral AI API has a hosted endpoint at https://api.mistral.ai/v1 and Beam 1.0 at https://api.reflection.ai/openai/v1.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/mistral-api-vs-reflection-beam.json, and with the fewest tokens: https://www.anchorterminal.com/compare/mistral-api-vs-reflection-beam.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "mistral-api", "b": "reflection-beam"}`. From a terminal: `anchor compare mistral-api reflection-beam`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/mistral-api.json and https://www.anchorterminal.com/api/v1/tools/reflection-beam.json

## Other comparisons with Mistral AI API or Beam 1.0

- [Claude API vs Mistral AI API](https://www.anchorterminal.com/compare/anthropic-api-vs-mistral-api.md)
- [Claude API vs Beam 1.0](https://www.anchorterminal.com/compare/anthropic-api-vs-reflection-beam.md)
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