Ember-1 vs GPT-6 Astra: Specs & Benchmark Comparison
Ember-1 is developed by Fireworks AI, while GPT-6 Astra comes from OpenAI. Both were released in September 2026. Ember-1 has a published size of about 2.8 trillion parameters; OpenAI has not disclosed the parameter count of GPT-6 Astra.
We have 4 benchmark results for Ember-1 and 22 benchmark results for GPT-6 Astra, but they overlap on a single test: DeepSWE 1.1, where Ember-1 scores 75.2% against 74.1%.
Ember-1 is the cheaper API at $3 per million input tokens and $15 per million output tokens, roughly 3 times cheaper than GPT-6 Astra at $10 and $50. Both accept a context window of about 1M tokens. Ember-1 accepts text as input, while GPT-6 Astra accepts text and images.
| Characteristic | Ember-1 | GPT-6 Astra |
|---|---|---|
| Company | Fireworks AI | OpenAI |
| Release Date | September 23, 2026 | September 4, 2026 |
| Parameters | 2.8T | — |
| Multimodal | No | Yes |
| Context (input) | 1.0M | 1.1M |
| Context (output) | — | 128K |
| Input Price / 1M | $3.00 | $10.00 |
| Output Price / 1M | $15.00 | $50.00 |
| Average Score | 78.8% | 74.4% |
| Benchmarks | ||
| DeepSWE 1.1 | 75.2% | 74.1% |
Visual Benchmark Comparison
Verdict
Ember-1 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Ember-1 — 0.8, GPT-6 Astra — 0.7.
Ember-1 is 3.3x cheaper: input $3.00/1M vs $10.00/1M tokens.
GPT-6 Astra supports a larger context: 1M vs 1M tokens.
Ember-1 is newer: released 9/23/2026 vs 9/4/2026.
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Frequently Asked Questions
Which is better for coding — Ember-1 or GPT-6 Astra?
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Which has a larger context window — Ember-1 or GPT-6 Astra?
The Ember-1 and GPT-6 Astra comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Ember-1 or GPT-6 Astra page. See also the complete list of AI model comparisons.