OpenAI API Alternatives
Decision and evidence surface verified 2026-08-14.
OpenAI is fine on its own — but here is every other provider we route to, compared on price, wire compatibility, and what a migration would actually cost in engineering time. We route to all 12, so this table has no reason to steer you anywhere in particular.
Provider comparison
| Provider | Median price/M | Median tok/s | Effort | Operational trade |
|---|---|---|---|---|
| Amazon | $0.11 | 108 | rewrite | Loses: no prompt caching |
| Groq | $0.26 | 780 | config | Loses: no prompt caching, no published SLA |
| Mistral | $0.45 | 118 | config | Loses: no prompt caching |
| Meta | $1.06 | — | config | Loses: no prompt caching, no batch discount, no documented data residency, no published SLA |
| DeepSeek | $1.32 | 100 | config | Loses: no prompt caching, no batch discount, no documented data residency, no published SLA |
| Cerebras | $1.41 | 2215 | config | Loses: no prompt caching, no batch discount, no published SLA |
| Z.ai | $2.15 | — | config | Loses: no prompt caching, no batch discount, no documented data residency, no published SLA |
| $2.25 | 114 | code-change | No operational facts lost vs the source provider | |
| Qwen | $2.80 | 49 | code-change | Loses: no prompt caching, no batch discount, no published SLA |
| xAI | $3.00 | 98 | config | Loses: no prompt caching, no batch discount, no documented data residency, no published SLA |
| Anthropic | $8.00 | 67 | code-change | Loses: no documented data residency |
What your OpenAI stack becomes
The closest cross-provider alternative for each of OpenAI's top current models by price.
| OpenAI model | Closest alternative | Effort | Price Δ | Biggest gap |
|---|---|---|---|---|
| GPT-5.6 Sol | Gemini 3.7 Flash (Google) | code-change | -81.3% | Max output drops from 128,000 to 65,536 tokens |
| GPT-5.6 Terra | Gemini 3.7 Flash (Google) | code-change | -73.3% | Max output drops from 128,000 to 65,536 tokens |
| GPT-5.6 Luna | Gemini 3.7 Flash (Google) | code-change | -33.3% | None significant |
FAQ
What's the easiest provider to switch to from OpenAI?
Groq — a config change, since it's fully OpenAI-compatible like OpenAI.
Is switching away from OpenAI worth it?
Depends on the model. Check the model-mapping table below: each of OpenAI's current models is matched against its closest cross-provider alternative, with the price delta and what you'd give up.
Do I have to pick one provider?
No — All AI Ask routes to OpenAI and every provider in the table below through one API key, so you can compare live instead of committing upfront.
Batch 46 evidence surface · verified 2026-08-14 · frozen route allowlist: /llm-providers/openai/alternatives
OpenAI estate replacement compiler, event portability, and safe cutover
Batch 46 · M1: OpenAI estate replacement compiler
Formula / rule: estate covered = every declared production surface has one qualified destination or an explicit retained OpenAI route.
Dated provenance: Frozen Batch 46 openai fixture; text, schema, vision, embeddings, audio, image, moderation, and realtime declarations; surface verification date 2026-08-14.
First-party citation: OpenAI platform API reference
| Field ID / fixture | Inputs | Observation / calculation | Decision boundary | State |
|---|---|---|---|---|
batch46-openai-m1-r1text Responses + strict-schema extraction | response API; schema; streaming; tool control; candidate endpoint | OpenAI text maps to a hosted OpenAI-compatible target; strict schema evidence is absent for the candidate. | Wire compatibility cannot close a schema-control gap. | UNAVAILABLE — schema join missing. |
batch46-openai-m1-r2vision + embeddings + transcription | image/audio modality; embedding dimension; transcript format; region | Candidate admits vision and transcription, but embedding dimension and region are not joined. | A multimodal pass cannot cover an unverified embedding contract. | UNAVAILABLE — retain OpenAI for these surfaces. |
batch46-openai-m1-r3image generation + moderation + realtime | image output; moderation categories; realtime transport; fallback | Only moderation has a qualified destination; image and realtime remain explicit retained routes. | Partial coverage is not a single-provider replacement. | PASS WITH RETAINED ROUTE — estate not fully portable. |
Batch 46 · M2: SDK-and-event portability suite
Formula / rule: portability pass = joined request/response/event/tool/usage IDs with no unverified semantic edge.
Dated provenance: Frozen Batch 46 openai fixture; Responses, Chat Completions, parallel tools, schema, stream, cancellation, usage, and retry fixtures; surface verification date 2026-08-14.
First-party citation: OpenAI platform API reference
| Field ID / fixture | Inputs | Observation / calculation | Decision boundary | State |
|---|---|---|---|---|
batch46-openai-m2-r1Responses text + Chat Completions message | request-17; response-17; event-17a; usage-17; target serialization | Target preserves message content and usage ID; response envelope needs an adapter repair. | Equivalent prose does not prove event-envelope parity. | PASS WITH REPAIR — envelope adapter recorded. |
batch46-openai-m2-r2parallel tools + strict schema | tool-call-22/23; schema hash; event order; stop; usage | Parallel calls join, but the candidate does not expose a settled stop reason after schema rejection. | Rejected calls cannot be scored as successful tool parity. | UNAVAILABLE — settlement missing. |
batch46-openai-m2-r3interrupted stream + cancellation + retryable error | event sequence; cancel event; retry ID; usage; error class | Retry ID joins and is idempotent; target cancellation event is absent. | No fallback result hides a cancellation edge. | FAIL — cancellation contract differs. |
Batch 46 · M3: Provider-concentration cutover board
Formula / rule: mutating promotion is blocked until every effect has isolation or proven idempotency.
Dated provenance: Frozen Batch 46 openai fixture; read-only, branch coding, RAG, ticket, database, and notification waves at 1/5/25%; surface verification date 2026-08-14.
First-party citation: OpenAI platform API reference
| Field ID / fixture | Inputs | Observation / calculation | Decision boundary | State |
|---|---|---|---|---|
batch46-openai-m3-r1read-only support · 1% | primary/fallback; reviewed outputs; mismatch severity; rollback owner | 99/100 read-only cases pass; fallback identity is pinned to the candidate host. | Read-only acceptance advances only read-only traffic. | PASS — advance shadow wave. |
batch46-openai-m3-r2branch-isolated coding + RAG · 5% | branch ID; retrieval citations; candidate identity; rollback trigger | Branch edits isolate correctly; one RAG citation is missing its source ID. | A quality pass cannot waive citation custody. | UNAVAILABLE — evidence repair required. |
batch46-openai-m3-r3ticket + database + notification · 25% | ticket key; transaction key; notification dedupe; side-effect audit | Database transaction is isolated; notification dedupe is absent. | Unkeyed external effects forbid live promotion. | FAIL — mutating wave blocked. |
Fail-closed rule: unresolved host, endpoint, artifact, modality, control, citation, workload, acceptance, or accounting joins remain Unavailable; no neighboring route supplies them.
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