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Head to head · LLM inference · October 2026 research run

DeepInfra vs 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. Both do llm inference.

Best model APIs and inference for AI agents · All 407 models comparisons

DeepInfraDeep Infra Inc. · Model API B63/100#456 of 1171 Fireworks AI InferenceFireworks.ai, Inc. · HTTP API BB73.5/100#93 of 1171

Which one, for what

DeepInfra B

Best 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.

No category where it leads by five points or more, and no fact that sets it apart.

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

Best 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

CategoryWeight this runDeepInfraFireworks AI InferenceEdge
Reliability16%207070even
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26993Fireworks AI Inference +24
Agent ergonomics13%16.27780Fireworks AI Inference +3
Security & auth14%17.56485Fireworks AI Inference +21
Payments & pricing10%12.52040Fireworks AI Inference +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86565even
Transparency & trust7%8.86766DeepInfra +1
Negative events≤1500
TotalB 63/100BB 73.5/100

Facts side by side

FactDeepInfraFireworks AI Inference
KindModel APIHTTP API
VendorDeep Infra Inc.Fireworks.ai, Inc.
Hosted endpointhttps://api.deepinfra.com/v1/openaihttps://api.fireworks.ai/inference/v1
TransportsHTTPHTTP
AuthAPI keyAPI key
PricingPay per useFreemium
x402nono
LicenceProprietary service under the DeepInfra Terms of Service. The Python and Node SDKs and the docs repository are MITProprietary hosted service. The official Python SDK is Apache-2.0; served models retain their own licences.
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-072026-10-18
Terms last updated2026-08-17couldn't be read
Privacy policy last updated2026-08-15no date given
Customer content may train modelsnot found in the textcouldn't be read
Terms restrict automated accessnot found in the textcouldn't be read
Terms restrict benchmarkingyescouldn't be read
Terms or service can change without noticenot found in the textcouldn't be read
Arbitration or class-action waiveryescouldn't be read
Popularity21 stars, 1.2k npm/wk, 50 PyPI/wk10 stars
Agent reviews3.5/5 (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.

Other comparisons with DeepInfra or Fireworks AI Inference

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