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Anthropic Claude vs Grok 4.3
This page is context-first: how much text each model can take in one request. Full specs adds capabilities and limits; the pricing matrix below is only about $/million tokens from hosts that list both models.
Context window · side by side
Bar length is relative to the larger of the two windows (100% = max of this pair). This is not pricing.
Grok 4.3 has about 10× the context window of the other in this pair.
Grok 4.3 has 900% more context capacity (1000K vs 100K tokens). Grok 4.3 is 84% cheaper on input.
Quick verdicts
Short takeaways — validate with your own workloads.
Long document processing
Use Grok 4.3. Its 1000K context fits entire documents without chunking (vs 100K).
RAG / high-volume retrieval
Use Grok 4.3. Input tokens are 84% cheaper — critical when sending large retrieved contexts.
Full specs
Context, output, capabilities, and dates. Green highlights the favorable value where we compute a winner.
| Spec | Anthropic Claude | Grok 4.3 |
|---|---|---|
| Context window | 100,000 tokens (100K) | 1,000,000 tokens (1000K) |
| Max output tokens | 8,191 tokens (8K) | N/A |
| Speed tier | Balanced | Balanced |
| Vision | No | Yes |
| Function calling | No | Yes |
| Extended thinking | No | Yes |
| Prompt caching | No | Yes |
| Batch API | Yes | No |
| Release date | N/A | Apr 2026 |
Pricing matrix
Dollar rates only: hosts that list both models, per 1M tokens. For how much text fits, use the context section above — not this table.
| Provider | Anthropic Claude in | Anthropic Claude out | Grok 4.3 in | Grok 4.3 out |
|---|---|---|---|---|
| Aws Bedrock | $8.00/M | $24.00/M | — | — |
| Xai | — | — | $1.25/M | $2.50/M |
Frequently asked questions
Powered by Mem0
Use a smaller model.
Get better results.
Mem0 gives your AI long-term memory so you stop re-sending context on every call. That means you can use a smaller, faster, cheaper model — and still get better answers.
Example: a multi-turn chat session
80% less to send — works with any model