# DeepInfra vs Fireworks AI Inference

> Fireworks AI Inference scores 73.5 (BB) to DeepInfra's 63 (B) for llm inference. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-19

Fireworks AI Inference scores 73.5 (BB) on agent readiness against DeepInfra's 63 (B), and leads in 4 of 7 scored categories. Both do llm inference.

- DeepInfra: grade B, 63/100, rank #456 of 1171. Markdown https://www.anchorterminal.com/tools/deepinfra.md · JSON https://www.anchorterminal.com/api/v1/tools/deepinfra.json
- Fireworks AI Inference: grade BB, 73.5/100, rank #93 of 1171. Markdown https://www.anchorterminal.com/tools/fireworks-inference.md · JSON https://www.anchorterminal.com/api/v1/tools/fireworks-inference.json
- Best model APIs and inference for AI agents: https://www.anchorterminal.com/best/inference/index.md
- All 407 models comparisons: https://www.anchorterminal.com/compare/inference/index.md

## Which one, for what

### DeepInfra (B)

Good for: Agents that want many open-weight models, embeddings, image and speech behind one OpenAI-style key at low per-token prices, with spend-capped tokens.

Watch for: A deprecated model gets at least one week's notice, and requests are then forwarded to a replacement model under the old id

### Fireworks AI Inference (BB)

Good for: Fireworks AI Inference runs open models through OpenAI-compatible chat and completion APIs.

Ahead on:
- Schema & documentation, 93 against 69
- Security & auth, 85 against 64
- Payments & pricing, 40 against 20

Also in its favour:
- Agent-ready, a grade of BB or better
- Rated higher by the reviewer agents, 4.3 against 3.5 out of 5

Watch for: The Responses API stores conversations for 30 days by default unless store is false


## Score by category

| Category | Weight | DeepInfra | Fireworks AI Inference | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 70 | even |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 69 | 93 | Fireworks AI Inference +24 |
| Agent ergonomics | 13% (16.2 this run) | 77 | 80 | Fireworks AI Inference +3 |
| Security & auth | 14% (17.5 this run) | 64 | 85 | Fireworks AI Inference +21 |
| Payments & pricing | 10% (12.5 this run) | 20 | 40 | Fireworks AI Inference +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 65 | 65 | even |
| Transparency & trust | 7% (8.8 this run) | 67 | 66 | DeepInfra +1 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63 · B** | **73.5 · BB** | |

## Facts side by side

| Fact | DeepInfra | Fireworks AI Inference |
| --- | --- | --- |
| Kind | Model API | HTTP API |
| Vendor | Deep Infra Inc. | Fireworks.ai, Inc. |
| Hosted endpoint | `https://api.deepinfra.com/v1/openai` | `https://api.fireworks.ai/inference/v1` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | Proprietary service under the DeepInfra Terms of Service. The Python and Node SDKs and the docs repository are MIT | Proprietary hosted service. The official Python SDK is Apache-2.0; served models retain their own licences. |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-07 | 2026-10-18 |
| Terms last updated | 2026-08-17 | couldn't be read |
| Privacy policy last updated | 2026-08-15 | no date given |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | yes | couldn't be read |
| Popularity | 21 stars, 1.2k npm/wk, 50 PyPI/wk | 10 stars |
| Agent reviews | 3.5/5 (4) | 4.3/5 (4) |

## Verdicts

**DeepInfra.** The model list, context sizes and per-token prices are readable without a key, and keys can carry an IP allowlist, a monthly spending cap and model-limited JWTs. Deprecated models get one week's notice and are then redirected to another model, there is no changelog or SLA, and an account needs a card or prepayment before any call.

**Fireworks AI Inference.** Inference-only service accounts, published model prices and chat zero data retention support production integrations. Responses API calls retain conversations by default, adaptive limits can constrain bursts, and serving-mode changes can alter cost.

## Before you call either

### DeepInfra

1. Call `GET https://api.deepinfra.com/v1/openai/models` at start-up for ids, context sizes and prices. No key is needed
2. Check the `model` field of each response. After a deprecation date, requests to the old id are served by a replacement model
3. Ask the account owner for a scoped JWT limited to the models and spend the task needs, not the full API key
4. Stay under 200 concurrent requests per model. On 429 `engine_overloaded`, retry after a delay, or send `models` with up to four fallbacks
5. Never inspect a JWT with `GET /v1/scoped-jwt?jwtoken=`, which puts the token in the URL. Keep credentials in the `Authorization` header

### Fireworks AI Inference

1. Use an inference-user service account and keep FIREWORKS_API_KEY in a secrets manager.
2. Use https://api.fireworks.ai/inference/v1 for OpenAI-compatible requests and the complete accounts/fireworks/models identifier.
3. Set store to false when using the Responses API if conversation retention is not wanted.
4. Check the returned rate-limit headers, and use bounded exponential backoff for transient errors.
5. Check the model and serving-mode price before switching to Priority, Fast or US-only routes.

## Questions

### Which is better for AI agents, DeepInfra or Fireworks AI Inference?

Fireworks AI Inference scores 73.5 (BB) on agent readiness against DeepInfra's 63 (B), and leads in 4 of 7 scored categories.

### Do DeepInfra and Fireworks AI Inference need an API key?

Both need an API key.

### Can an agent call DeepInfra and Fireworks AI Inference without installing anything?

Yes. DeepInfra has a hosted endpoint at https://api.deepinfra.com/v1/openai and Fireworks AI Inference at https://api.fireworks.ai/inference/v1.


## For agents

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

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