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Alternatives · Inference APIs

Anthropic API alternatives, graded

thecontinuitylayer.com/alternatives/anthropic-api

Anthropic API scores highest on its shelf, 5 of 5 (grade A+), so every alternative below scores the same or lower: Groq (5, A+), OpenAI API (5, A+), Fireworks AI (4½, A) lead the ranking. Every grade is read from the maker's own page, checked 5 November 2026, never from a review.

A+
Anthropic API · 5 of 5
13
inference APIs to compare
0
score higher
5 November 2026
Makers' pages checked

Every inference API on the record, ranked

Anthropic API’s own row is shaded. The five columns are the tests a person switching asks about first; each product page has every test, with the maker’s line and the source. Where the test is about training, no is the good answer and is colored as such.

inference APIGradePriceRate limitsTrainingRetentionStatus page
Groq#1 · GroqA+5/5
OpenAI API#2 · OpenAIA+5/5
Anthropic API#3 · Anthropic · this oneA+5/5
Fireworks AI#4 · Fireworks AIA4½/5
OpenRouter#5 · OpenRouterA4½/5
DeepInfra#6 · DeepInfraA4½/5
Gemini API#7 · GoogleB+4/5
xAI API#8 · xAIB+4/5
Together AI#9 · Together AIB3½/5
Mistral API#10 · Mistral AIB3½/5
Cohere API#11 · CohereB3½/5
Baseten#12 · BasetenB3½/5
DeepSeek API#13 · DeepSeekC−2½/5
HiAPI#14 · HiAPID2/5
  • Price · Does it publish a per-token price?
  • Rate limits · Does it publish its rate limits?
  • Training · Does it train on your API prompts by default?
  • Retention · Does it say how long it keeps your prompts and outputs?
  • Status page · Does it run a public status page?

Anthropic API alternatives, by what matters

5 inference APIs that don't train on your prompts by default

  1. A+ Groq
  2. A+ OpenAI API
  3. A Fireworks AI
  4. B+ xAI API
  5. B Together AI

Anthropic API passes this test too.

7 inference APIs that publish their rate limits

  1. A+ Groq
  2. A+ OpenAI API
  3. A OpenRouter
  4. A DeepInfra
  5. B+ xAI API
  6. B Cohere API
  7. B Baseten

Anthropic API passes this test too.

9 inference APIs that say how long they keep your prompts

  1. A+ Groq
  2. A+ OpenAI API
  3. A Fireworks AI
  4. A OpenRouter
  5. A DeepInfra
  6. B+ Gemini API
  7. B+ xAI API
  8. B Mistral API
  9. B Baseten

Anthropic API passes this test too.

What Anthropic changed lately

  1. Since 3 November 2026, text generated by Claude Mythos 5, Claude Opus 4.7 and Claude Sonnet 4.6 carries Anthropic's text watermark on the platforms Anthropic lists; on Sonnet 4.6 a request that sets temperature, top_p or top_k to a non-default value might not carry it. The Decoder reported on 4 November that a notice to API customers extends the watermark to Claude Opus 4.6, Opus 4.5, Sonnet 4.5 and Haiku 4.5 from 16 November 2026, a few days later on Amazon Bedrock, with the same caveat, and that customers cannot turn it off.

    source

  2. The pricing page lists a new Ultra plan at $200 a month and Max at $100 a month only; on 23 October 2026 it listed Max in two tiers, the higher one priced only on a help page. The usage-limits page says verified Ultra accounts have no five-hour session limit. Neither page dates the change.

    source

  3. Anthropic deprecated fast mode for Claude Opus 4.8 on 30 October 2026, with removal on 30 November 2026. After that, API requests to claude-opus-4-8 that set speed to fast return an error; Anthropic points people who want fast mode to Claude Opus 5.5.

    source

Every change from Anthropic, dated →

Alternatives to the others

The whole shelf: Inference APIs. How the grades are made: How we grade. No maker pays for a place or a grade.